Tw200 running lean not a TW owner but i play one on this forum. -2007 Yamaha TW200-2007 Yamaha FJR1300-2005 Honda Goldwing GL1800-2004 Yamaha FJR1300-2004 Suzuki SV650-1982 Honda CBX My motorcycle was behaving as if it was running very lean. the dealership said this is normal and the bike just "runs cold. They are set up extremely lean from the factory. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 2001 TW200 adopted January 2012. I know, I know, don't kill me over it) Oil Sounds like the unit is running lean on the air fuel mixture on the pilot jet. 0 turns and no significant improvement. If the carb is clean. Here the thing, if it does have the wrong filter, running it will ruin it. My bike is a 225 with highway gearing (15/39 I believe. With a gummed up carb you can not get it run nor jet accurately. Which is odd where most folks ran best at 2-2. Again, that TW200 forum is the place for good information. These bikes are generally set up lean stock, and a lot of dubbers have gotten pretty close to the sun with the stock setup. , D shield bark busters, 55t rear sprocket, Golden boy front tire, Ricochet shield. Anyhow, I'm really happy with the way it all turned out. In a lean condition, or with a lean bog, there is too much air relative to the amount of fuel, which affects the engine’s ability to burn the air-fuel mixture effectively. It's up to you to decide if it's worth the noise or not. Premium does not burn fast enough, and can cause a loss of power. Have you done a plug chop to see if it is actually running lean? I'm wondering if you have more wrong that just the main jet. It's a 2005 tw with about 2k miles, which needed a 10+ minute warm up with choke before it would run right. You may have to register before you can post: click the register link above to proceed. It is probably lean: 1. Of course I didn't have a lean problem before or new, (2003 TW200 part#5LB-14384-00, K140829A) to insure Woodland, California (NorCal). Meaning it’s a great exploring, going fishing, running errands, farm and trails bike. a. 020 shims on the needles and @ 2 1/2 turns on the pilot screw, #34 pilot jets, Acerbis hand guards, Shinko 241 front tires, modified Krator foot pegs, 14-55t sprockets, Ricochet The #31 is just too lean in my opinion. To me it sounds like pre ignition but I wasnt sure. If it run ok I would still pull the carb this winter and clean it. The OP asked "Who, in their right mind, would change oil WITHOUT changing the filter? " A forum community dedicated to Yamaha TW200 owners and enthusiasts. Or at least run the same set of jets all the time. " The dealer is somewhat wrong with his generality, these TWs I used the stock jetting along with "dial a jet" I don't have any issues with it bogging out or running lean. Mixture screw too lean, probably less than 2 to 2 1/2 turns out from gentle seat. It has the same engine as the TW200. as lean as these bikes come from the factory and perhaps depending on the gas you are running (ethanol or non ethanol) they can be noisier than you like. So it looks like it is running lean. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! Mike Carter. YZ250 stated. So I spent about 2 hours trying every mixture setting and I can get it to close but there is always a flat spot and its running really lean. However I don't even know if Yamaha's fuel injection is comparable and you are right about carbs being more reliable. WR250F/YZ250F/YZ250FX; Activity. Some use soot 87 TW200 Running Rough. I ride it to work during the day and home at 1:30am. I ran what they call a "loose" engine. Not I installed the "112" tonight and went for a test ride. Finally we were getting somewhere! It ran much stronger, actually had some pull through the gears on acceleration and I was able to consistently achieve 75mph while I bet it is running lean maybe , are you hearing any spark knock ? Cheapest way to test might be to run a few hundred miles on higher octane gas. . Be prepared to experiment. , I just don't get it; turning the pilot screw will correct a lean running bike? The pilot circuit is for 2007 TW200 "Blue Magoo" D606 front - EBC HH pads - Cogent DDCs - Galfer SS line - Renthal 809s - Acerbis X-Factory handguards - Ricochet plate - Dynojetted - Barnett HD springs - Yamaha Rear Rack Reactions: Stimus , Snow Fox , Westieterrier and 1 other person First, I have never seen another TW200 so I have nothing to compare this to. - Need Help. 2003 TW200 "Betty Boop" 2006 TW200 "Nibbler", a. My Moto Blog Pair of 2006 TW's. If that fixes it then play with The very first thing is to check and adjust the float level. It was a special oil that the 2 smoke guys ran in their fuel. This problem we discussed was, in a way, too much fuel, which would make me think RICH, not LEAN. I can do about 50MPH in either 4th or 5th gear, I'm not able to go any faster in 5th than in 4th. The new larger pilot smoothed everything right out. Let's A lean surge is a slight speeding up and then slowing down when the throttle is held steady in one position. Great bikes within the limits of their design. Hi SkiPro3: Yes, really lean and at least 2x Seafoam, though let's admit it, it's our Hail Mary and then do as you suggest. Followed up with 3 shims on the needle and a 130 main jet - big improvement in performance and I live in the same region as the OP. Come join the discussion about performance, exhaust, suspension, parts, modifications, troubleshooting I just bought a 1990 TW200 that was sitting for a while so I rebuilt the card, changed the oil, etc. In Havasu City, you may want to explore a larger main jet, as it also is a bit lean because of the Fed standards. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! 2001 TW200 SOLD 2020 BMW R1250 GS, 2019 SWM RS300R & 2020 Scorpa T-Ride are my go to motorcycles. How about the lean/rich fuel mixture screw that is hidden behind a brass cap that 04 Yamaha TW200, 07 Yamaha TW200, 07 Kawasaki Vulcan 1500, 2010 Kawasaki KLR650. If the bike runs fine, don't fix it--it ain't broke. Recommended Posts. Gizmo" All Things Considered Twin 2014 TW200's made side by side on the assembly line, Moose rear racks, Protaper ATV high bars, DG oval pipes, kick starters, rejetted carbs, 130 main jets, 2 -3 -. It's in great shape but after rebuilding the Carburetor I am having some issues. It should run on premium as well, though maybe not as good. This lean pilot is very easily dirtied up. I'd check this first. When cold or when running above an idle it sounds pretty good, but when hot and idling it makes an awful ticking sound. Ski Pro 3. When the bike is pulling cleanly at a good high RPM & wide-open throttle slowly back off on the throttle to about 7/8 throttle. An unlit propane torch can be applied to area, while runninglisten for a change in idle. Is it a lean surge? Jump to Latest Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 2) Since the TW is a street legal bike as shipped by the factory, the jetting is going to tend to be a bit on the lean side (thanks to EPA). Joined: Jun 4, 2018 Member: #255460 I bought a 2013 Yamaha TW200 to modify to a naked/scrambler and it looks wicked (IMHO). Replaced the fuel filter I had put on the bike when I bought it. bike has been running great until the other day. I'm running ethanol free in it. Tags carburetor tw125. the plug blocking access to the mixture screw and check to see if like many California models it came from factory set lean @ ~ 1. 2001 Moto Guzzi California EV acquired June 2012. Still sounds like a lean running condition. 5 and it ran fine but I feel it is better to run a little rich through the whole throttle range especially since I do a lot of sustained wot. Bolt R-Spec 22 Triumph Street Twin 20 CanAM Ryker 900 14 Honda CB1100 18 Yamaha XT250 16 Moto 2007 TW200 "Blue Magoo" D606 front - EBC HH pads - Cogent DDCs - Galfer SS line - Renthal 809s - Acerbis X-Factory handguards - Ricochet plate - Dynojetted - Barnett HD springs - Yamaha Rear Rack Reactions: Stimus , Snow Fox , Westieterrier and 1 other person My new 2017 was running very lean with engine surging and paint burned of the header pipe after about 200 miles! I started out with about 2 1/2 turns out on the mixture screw - definitely helped. Come join the discussion about I bought my bike because it's not fuel injected. 145678901mpg of fuel efficiency. com/diytechnician Forgetting standard house I started with the idle mixture screw 2. 5 turns out from seated. This usually happens when the engine is warm, at lower elevations, and when lugging the engine. I always adjusted the mixture by going lean until the engine started running poorly then back it up one, sometimes two steps and that was usually a This normally means the idle is lean. original tw125 carb. Technical Help. com/diytechnician Buy me a coffee? https://www. 0 2. The last two times I started it, it was a bit harder to start and ran rough, coughed a bit until warmed up. That makes my $4000 TW worth, well. Your bike probably has a 126 main jet in it. it has adequate airflow in and out in stock form and is just slightly lean. I like to see more of a tank color on the electrode and insulator. If it is not running well at 3 or 3 1/2 turns out then go to the next larger pilot jet. Especially after reading about the lean running factory settings. It runs great when it is warm out,but on the . The lean condition could be from a dirty carb especially if the unit has been setting . Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! Weak Spark - solved, valve problem. so Just for clarification, a TW200 should be able to run reliabliy at 2,800rpm all day long grunting through rough terrain and at 3,000 to 4,000 climb anything short of near-vertical without stalling. Bike is a stock 2004 tw200 at sea level, snorkel removed. Mine probably had been leaking for a long time, which made it run a little rich. These things really are goats when running right. My 1987 TW200 runs great most of the time. Reactions: axismatt, Loghousenut, Snow Fox and 1 other person. howtomotorcyclerepair. Maybe! 2013 TW200(Protaper SE ATV High handlebars, DID 428VX-X ring chain, Shinko Tires Or will it just make the bike run lean period? Lean symptoms such as popping, "blip" the throttle and a tad bit of a long time to return to idle, header starts to glow quickly, diminishes when riding around the block but still emanates a faint gl Jump to content. The next item is to determine a rich or lean condition. But it shouldn't cause the problems you are having. The first thing I would do is clean the carb as gas gets old and gummy and can block the jets and passages. Also for clarification, they should easily reach 8,000 rpm on flat ground. Two and a half turns out is generally ballpark. I can't get the idle speed set to 1400 as the idle won't stay consistent. Reactions: Smitty Blackstone, Ken and JerseyJeeper. K. The OP asked "Who, in their right mind, would change oil WITHOUT changing the filter? "Unless your filter is You’re running lean. That little one is the smallest one made. Joined My TW200 won't run without choke. 1993 TW200 just over 50,004 miles A forum community dedicated to Yamaha TW200 owners and enthusiasts Anyway, once home, got it to run but mostly with the choke on, and still had trouble keeping it running. If the bike picks up speed or power as you slightly back off the throttle then you are running too lean on the main jet. 2003 Tw200, 2014 BWS 150, 1969 VW Beetle Baja, 1972 Super Beetle Buy 2001-2024 TW200 TW 200 cc TrailWay 6 Sigma Custom Carburetor Carb Stage 1-2-3 Pilot Main Jet Flow more air, the engine runs leaner because it's getting the same amount of fuel. Maybe he can share his experience. The XT runs just fine on 87 octane. All Activity; TT Picks; Podium; Search; More . Once you are done with any dealer warranty checks/services open up the pilot jet to 2 1/2 turns out or so and fine tune from there. jb I located it from all the great pictures/tutorials here at TW200, drilled my small hole inot the plug, screwed a wood screw intoit a few The noticable improvement depends on just how lean the bike was before Now my bike has the TTR's 223cc 6-speed with a TW200 carb so was running a bit lean anyways. Hello, I have currently ( and had a few before ) a tw200. I feel that while the stock main jet is lean under my summer daily driving conditions, it is probably better than the 130 by the time I am up in the mountains at 7000ft+ and 60 degree air. An engine running rich will be cooler than one running lean. Overview/Model Info The following year http://www. 2017 Yamaha TW200 with '09 bodywork except with '15 front fender. As temps drop, air becomes more dense and will cause a bike to run even leaner, and exhibit some of the symtoms you are describing. I went back to 5 washers today and ran it for a while with minimal problems. However when I swapped the airbox for a small cone pod filter and the muffler with a shorty pipe with just a baffle, the fuel/air mix got all Turned out I was running rich, but was not able to notice it, as the stock pipe was blocking the smoke somehow. com/how-to-size-your-pilot-jet-pilot-screw-explained/Click link above for blog post with more info. Come join the discussion Now i am running an aggressive dunlop 110/100/18 "rear" front tire and like it even more! its got very thick sidewall and ive been running 6psi in the front. However, up in the mountains (4000' +) it was awesome. The cleanest plug pic is the newer one with 50 miles running on the new jetting. Share More sharing options Followers 0. i took my bike to the dealership because my bike won't start on fuel. 020 shims on the needles and @ 2 1/2 turns on the pilot screw, Here is stock jetted TW200 carb feeding a TTR225 engine in my Betty Boop as she summits a 11,400 ft peak. Then hook everything back up and see if it runs without choke. Your theory is sound except I believe the engine start running rich not lean. These bikes come jetted extremely lean. which can be from carb not seated into intake. Joined Jun 3, 2015 · 30 Posts TW200 Forums. 7044 posts · Joined 2010 Add to quote; Only show this user #4 · Not 100 % sure but looks like the plugs are cracking and gases shooting out through the top. The description you gave points me to suspect your bike is running lean and you may need to change jetting as Mr. howtomotorcycl Cancel Create thread New Forums More New Forums More Hey guys-bought my dream bike about a month ago but it's quickly becoming a nightmare. 5647 posts · Joined 2014 Add to quote; Only show this user #3 · Jun 29, 2023. Very rarely is it being ridden with the RPMs I purchased what was reported to be a 2006 tw200 in Colorado. Needle too lean / not raised enough 4. I have to use the choke to start it when it is cold. a TW200 should be able to run reliabliy at 2,800rpm all day long grunting through rough terrain and at 3,000 to 4,000 climb anything short of near-vertical without stalling. But if you take out the restriction of the air filter and box and they Bike was super lean after that so I re-jetted again. Last fall I bought and replaced the missing spark arrestor. I could tell it was running properly from the exhaust note when I tested it. Ex-rides: 2002 BMW F 650 GS, 1998 Yamaha V-Max that I rode 67,000 miles in six years and had many adventures, 1979 Yamaha RD400F Daytona Special, Yamaha XT 500, 1969 Yamaha DT 175 Enduro purchased new that started it all and a Honda 90 and 110 ATV, an The factory setting is supposed to pass all the US emissions standards, so it is verylean. It doesn't sputter or cough like it's running rich. 10, Barnett Kevlar Clutch, Nibbi Racing PWK28mm Power-Jet Carb, Tusk Rear Rack, Pro Taper ATV High bars, 15T Front Sprocket, DID X-ring chain, Tusk D-Flex handguards, Ricochet Skid Plate, Moto MTC w/70T, I've been thinking it was running lean to cause this. hope this helps. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! Lean Carb. Pilot jet partially cloggedcheck if you have to actually get into the carb. 2K views 22 replies 6 participants last post by TW-Brian Jul 4, 2020. They expand to fill the hole. 7K views Thanks for the replies. To wit, it increases fuel, which is why the TW will not run on full "choke" - too much gas I thought sure it was just a lean pilot and a lager one with some needle shims and fuel screw tweek and it would be good. shawn . They will all hit 70 plus on the speed and have a tan colored plug. If you have a post 2001 stock TW with NO carb work, I can tell you unequivocally that your main jet is not too leanwith a 126 jet at 6,000 feet that would be impossible. Idle mixture screw too lean, rather than about 2 1/2 turns out from gentle seat. Do the same thing for a couple days, and see if there is any Here is a good one. Runs pretty good in the 100 degree summer at 500ft elevation. Sounds like a lean running condition and/or a dirty low speed passageway or jet in the carburetor. Vacuum leak, which can be from carb not seated into intake. You can attempt to loosen the clamps on the intake boots, which should allow you to rotate the carb to remove But back to the pilot jet size; Like I said, stock is #30. Fatten up the mixture and it will be a completely different animal. How much MPG will you lose is tough to say. Spark plug showed it was running rich. The lowest I have had is around 45 and the highest before the installation of the jet kit - almost 80. Will start and run without any choke and buttery smooth on the decel. You may want to increase the size of the jug and up the carburetor size a few mm to get what you want. A forum community dedicated to Yamaha TW200 owners and enthusiasts. As such my experience may not be comparable to a stock bike. I had . Plenty of details about there I've posted several times how to replace the pilot jet and how to order replacements from Aliexpress for cheaper prices than dealer/factory. If you pull the "choke", it acts as a fuel enrichener rather than a "standard choke" set up. Before swapping the main jet I was content with about 3. 5, 4. My bike has a very lean air/fuel mixture: it always requires full choke to start, takes a very long time before it will run without any choke, backfires on deceleration, etc. Long story short, it cuts out like it is running out of fuel in the middle of acceleration (high end). the air filter can mke big difference. Providing the parts guy gave you the right plugsngk are good plugs too . I use the foam earplugs to plug the airbox holes when not in use so I can re-use them like your plugs. J. I can't tell if it's running lean or rich. 75 turns out from seated. Twin 2014 TW200's made side by side on the assembly line Also interested in any other ideas since the Cogent upgrade will run about $1500. The snorkel may help counteract the lean condition since it will restrict airflow some. 5 turns for it to run best. k. Running lean causes detonation and hotter EGT's which ruin exhaust valves and destroy engines. In fact, it runs better on 97 octane. Reactions: hudt0330260, none_of_my_bikes_run and TW200 Forums. Your pilot screw is already at 2 1/2 turns. The more extreme of any of the three, the worse the noise sounds. I thought sure it was just a lean pilot and a lager one with some needle shims and The cleanest plug pic is the newer one with 50 miles running on the new 1980 Suzuki RM 400’s, 1971 Husquvarna 400, 1983 Honda V65 Magna, 1987 Suzuki 230 Quad, 1987 TW200, 1990 TW200, 1996 Honda XR 650, 1998 Yamaha 300 King Quad, 2000 A leak, or missing part, in the circled assembly will cause a lean running condition with associated spitting and back firing on deceleration. Doesn't that usually mean its starving for fuel or running lean? I am also noticing a nasty sound in the jug from time to time, sounds like someone on the inside with a 2003 TW200 "Betty Boop" 2006 TW200 "Nibbler", a. You would have to have about a 118 jet in there for it to None of them surge or run lean on the main. 1942 posts 2016 tw200 upgraded carb New member here, relatively new to using forums and brand new owner of a TW200. However Admiral was right behind me ona stock carb TW for the entire ride and he never complained of disappointing performance. Wormspur Discussion starter. When I'm at WOT in 4th or 5th on a flat road and doing about 50, if I pull the choke all the way out, nothing changes at all. New, clean gas, checked fuel cock it is good, screens on it good, Cleaned carb THOROUGHLY, checked all o rings, seat, float et. Lots and lots of posts on jets, needle shims, part numbers and where to find them. Which would mean I was running rich with lack of air correct? I do plan to just get a new filter anyways, but if problem persists would it sound crazy to take it back in another half turn and lean it out even more? Which would put The other thing on an air cooled engine like this is it could be running extremely lean which would cause heat. Members; Also, when I come to a stop, I get a pretty strong smell of unburned gas, so I am pretty sure the propblem is running fat, not lean. Also, I think the holes "add too" the existing airflow from air snorkel and don't bypass it. I'm only going to run the under seat snorkel some of the time, and use the stock snorkel for normal use. I tried adjusting the pilot screw to 2. Just an example of the problem is that I can't run at a steady 7-8 mph in first gear and have it just run w/o jerking, caughing, etc. '89 Tw200 (Black Widow Edition). Use the Search Community box at the top of the page. I have an XT200 that has about 4100 miles on it that I recently acquired. So, seeing as I do MOST (probably almost all, 90% or so) of my riding at high RPM, would I be correct in thinking that the culprit is the main jet?? I do my riding at high speed and high RPM because I mainly use the bike to commute on the highway. I know many tuners, pro and home. #4566 1987 Yamaha XTTRTW 229cc Placerlode Extension Shaft Six-Speed w/Kicker Disc brake TTR225 forks w/modified TW dual-piston caliper, Kenda K270 5. Reactions: Snow Fox , SEADUB200 and salabim. It won't be greed which destroys America. 2. Reactions: With these changes i just want to make sure im not running the engine to lean, causing a burnt or overheated piston after a few beatdowns on this thing. I am wondering if the early TW200s used the same Teikei carburetors as the XT200. Save Share then repeat. 030" shims and it was too much, hard to start. Jump to Latest Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! 21 - 26 of 26 Posts. Tags cdi cranks spark will not star. Set the float to the specs and retest the running. Jump to Latest 7. that white color normally means its running hot which is lean. Is this the OEM and start setting of the pilot screw adjustment. It should happen in any gear, but usually more noticeable at smaller I'm puzzled about the running worse bit. Pilot jet too lean or partially obstructed (gentle probing with safety pin may help) 3. And once you richen up the carb, you will lose MPG. 152 posts · Joined 2018 Add to quote; Only show this user #1 · so i've put about 387 miles on my 2017 tw200. I got my brothers 3 Harley's running that way after they sat for 3 years with a half a tank of bad gas that smelled like swamp water. Overheating with an air cooled engine is a sure sign of running lean. I have found the stock configuration of the CV carb at low elevations is lean. Jump to Latest Follow Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! TW200 Forums. 020 shims on the needles and @ 2 1/2 turns on the pilot screw, #34 pilot jets, Acerbis hand What is a lean bog vs rich bog? In the dirt bike world, the terms lean and rich refer to the amount of fuel mixture and air flowing in the carburetor. Joined: New bikes are setup to run extremely lean in order to comply with federal/state emissions standards. I think it's running a little lean at sea level, but my friend is moving to a higher elevation (about 4500'), so I told him we'd look at tuning the carb once he gets there. And no it is not running too lean,if anything it is too rich I think its running a little lean. Push in the choke and the mixture is too lean causing the bike to stall. And I agree with an air cooled engine your gonna But still feels like its running lean higher up which brings me to something I've noticed - both slide needles appear to be aftermarket as they are of the adjustable type (and from what I've read on other posts on here they should be non - adjustable) both are set right in the middle, I left them as they were. There are no lean spots and no hesitations and it starts and idles the same every time. You could try a bigger main jet or just shim the needle some. I don't think the main is lean until temps get down below 55 degrees, or so. Come join the discussion about performance, exhaust, suspension, parts, modifications TW200 Forums. Thanks! So I did just see a major improvement from excreting more excess oil from filter. Funny it only does it when it is cold. By JimQF, July 15, 2008 in XT/TT/TW. i ride every . You can remove the idle fuel screw cover plug, and adjust more fuel into the idle. If I was planning to go that high I would probably order the next two smaller jet sizes, the 112 and the 110. tOM . If this is your first visit, be sure to check out the FAQ by clicking the link above. $4000 There seems to be a lot in how I distribute my weight on this bike as well as bike lean in turns and braking, etc. 5 turns out on the TW200 Forums. I tried to always run my bike dry, turning off the petcock and letting the bike's carb run dry. My TW was cold blooded when I first bought it - it was a year old with 25 miles. If it's 'normal', then I won't worry about it. The engine does run lean, though. i usually warm it up full and then half choke before riding. Starts OK and the RPMs get pretty high with no throttle initially and I can put it around half choke to lower the rpms a bit. But when I cleaned, I used a carb aerosol spray under pressure and cleaned it good. 2015 VStrom XT going up for sale Popping on decel usually means the engine is running lean. Try some SEAFOAM in your gas first as this is the easiest fix if it can be corrected this way if dirty, especially if bike sat for sometime. Come join the discussion about performance, exhaust, suspension 1. “Mr. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! Carb tuning help!!! Jump to Latest Follow 3K views 5 My 2016 TW will only start and run on full choke, even with the engine fully warmed up. If it's off one way or another it can throw the jetting off too. All my other machines with carbs always run perfect as long as their properly maintained. Of course, you'll lose about 2. Save Share Reply Quote Like. I tend to avoid pavement anyway, so this tire suits me just fine. First impression after letting it get nice and warmed up is that it's definitely running "leaner" but I still need to do some adjustment on the idle circuit now to perhaps lean it out a bit at idle/partial throttle. You may need to lean the bike out past the 1. The bike will still be a bit lean at sea level and return good efficiency, but should be spot on heading up the mountains where the grade can cause over-heating with a lean tune, to slightly rich at 6,000 feet, where you pop the grommets. Also tried running with the choke on 1,2,3 clicks, again just not right. Twin 2014 TW200's made side by side on the assembly line, Moose rear racks, Protaper ATV high bars, DG oval pipes, kick starters, rejetted carbs, 130 main jets, 2 -3 -. Am I running lean? Jump to Latest Follow Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! 21 - 21 of 21 Posts. 5 turns out and it needed the choke to run well, so I adjusted it out another turn and a half before it would run with the choke all the way in (after warm). buymeacoffee. I have ridden my TW with the standard 126 main in Death I can not tell you how many times I've cleaned the TW200 pilot jet only to have the same problem you have. It’s not a long distance cruiser ( although the motor will easily run at 7000 rpm for many hours continuously ) with no ill affect. Woodland, California (NorCal). Just cleaned the carb thoroughly (soak+ultrasonic) and did the following: replaced pilot jet (#31) If the O2 sensors on bank 1 read that it's running lean then it will pop the code for Bank 1 and vise versa. So far, no pictures or representations of the inside of a TW200 CDI are available online, to my knowledge. For me, the 126 was too lean near sea-level, as were the rest of the stock carb settings. By running the 2 cycle oil, any fuel that got in the crankcase wouldn't do General Yamaha TW200 Discussions. The slightest residue causes it to narrow, making the bike difficult to run right. if you look through the forum arkives there is lot of info on plugs and jetting for air and exhaust mods. And, straight pipes on a Sportster are difficult to tune, create reversion and a loss of low end torque. Fatal_Paradox Well-Known Member. I finally bought a new pilot jet and that fixed the problem. When I bring in the bike I'd like the dealership remove the plug for the mixture adjustment screw and enrich the mixture. I've never heard of anyone's screw backing out. When on decel, there is a lot of popping noises from the exhaust. After I repaired my carb, it starting running lean. Or if the bike is running, go for a ride. I'm running one on a TW200 and a TTR225. Sort by Oldest first Oldest first Newest first Most reactions. I know the bike is running lean (please correct me if this is wrong), but the carb is clean, The TW200 guys recommend 130 and 30 size jets - I ordered those, plus jets one step up and down so I have them available for tuning if needed. I've posted how to replace the bowl screws with allen head screws. I also don't want to rely on dealerships to maintain my bike. either way the "right" jet is going to be very dependent on the altitude you ride at. A wrap traps the heat and could be the I did a search and didn't find anything for general tw200 jetting baseline. From what I know, that means that it's running lean. qwerty. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! Help! 1988 tw200 running problem The TW is set lean for emissions tests by default, but never to the extent that it would run "fast", that would be counter productive. as a test i removed the tightness limit spacer on the intake boot hose clamp and really cinched things down, made a big difference in reliability of tune, engine immediately went from running lean to running rich, that settles the question of whether there was an air leak at the intake manifold. The TW200 Forums. it looked exactly the same on the inside so I'm not sure if it was ever clogged but I now think that the bike was It had a lot of popping on deceleration as well. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! Air flow to carb, you said no leaks, if you're running lean it sounds like you know if you spray some seafoam or other ignition aerosols you'll see changes in RPM if there's an intake leak. also how to upsize the jet so the bike isn't so lean and need of choke, even when the pilot is clean. JimQF. Yes. 24 Hello, I have currently ( and had a few before ) a tw200. http://www. I was able to pick up a 2014 TW200 with 120 miles on it for cheap last weekend and I have already started to mod the thing. If the carb is still stock, then it's most likely running FAR too lean, and that will cause problems in short order. jeffrolives · Registered. The bike was running fine when stock. 126 to 128= noticable difference in all around performance with the bike. Got it rich enough it was turning plug black, still cutting out, but worse, got it lean enough plug is a little Hey guys-bought my dream bike about a month ago but it's quickly becoming a nightmare. Russianman92, Jul 3, 2019 #10. 03 TW200 "No Road---No Problem" 81 Z50 "Just Because" Does running lean make it hot? On the valves, I think the feeler gage will only go in when it's TDC. Come join the I have adjusted carb to lean it out (about 1. Mine did. Gizmo" All Things Considered I’ld Rather Be Motorcycling. Good Luck!! A forum community dedicated to Yamaha TW200 owners and enthusiasts. TW200 Forums. 2001 Yamaha TW200 2015 Nissan Xterra PRO-4X. Then, if it still runs rich, lean the top end with a smaller jet, lower the needle, or tighten the pilot screw, depending on where in the powerband the rich running is occuring. 1 2. Kit Includes: Main Jets, Needle Adjusters, Nylon Spacers, Drill One mod at a time I'll get her running stronger. They're notoriously lean from factory for emissions and mileage. On full choke it races quite high and the slightest bit of throttle sends RPMs higher. Your stock jet should be a 114. Buy me a coffee? https://www. One thing to keep in mind is the pre-02's did not have CV carbs, and are jetted real lean at idle for emissions. I ran straight 2 cycle oil in the crankcase of my 4 cycle engine. Banks are just sides of the engine. 2021 Yamaha Tenere 700 now with my son (I still get to ride it). If you are happy with the starting and running of your TW, don't mess with the jetting. jbfla. A ride in the woods helps me relax and release tension. Save Share An engine running rich will be cooler than one running lean. Come join the discussion about performance, exhaust, suspension, parts, modifications, troubleshooting, maintenance, and more! ”Everything You Know is Wrong” ” How Can You Be in Two Places at Once When You Are Nowhere at All?” Twin 2014 TW200's made side by side on the assembly line, Moose rear racks, Protaper ATV high bars, DG oval pipes, kick starters, rejetted carbs, 130 main jets, 2 -3 -. Putting a larger main jet helped my TW start easier and had slightly more oomph going uphillwas able to maintain a higher speed. 3. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! Ok that makes more sense. I bet it is running lean maybe , are you hearing any spark knock ? Cheapest way to test might be to run a few hundred miles on higher octane gas. 5, 3. O. Cylinders 1,3,5 (bank 1) are on one side while 2,4,6 (bank 2) are on the other. Yech! From what I know, that means that it's running lean. Had tons of blow-by. , D shield bark busters, 55t rear sprocket, Golden boy front tire, My TW was starting, idling and running well minus the lean surge that so many of us seem to have. In all actuality, since the uni filter is going to be less restrictive than the air box. Reactions: YZ250 too, Loghousenut, Snow Fox and 1 other person. Jul 3, 2019 at 8:09 AM #11 #11. Jump to Latest 1. Carb leaking gas when gas on and not running. From what I gathered at the tw200 forum a good start is up one size on the main jet, fuel sc Well Mike Q, my 2001 at 300 miles has the same rattle. 5 turns from seated) but still having issue. We all had to run methanol by the rules. I think that is an indication it is running lean. It ran great up there, but since I brought it home to Oklahoma, it will only start with full choke and I have to feather the throttle to keep it running. I siphoned out the old fuel put in fresh regular and a double dose of seafoam and by the end of running that tank it started w/o choke needed. Regardless, these bikes like to bog when given a quick snap of the throttle It is probably lean: 1. The only thing that does need modded is the cable bracket so I can use the OEM throttle cables. 2018 Yamaha TW200 2002 Honda 750 Nighthawk. so i've put about 387 miles on my 2017 tw200. If the bike runs rich, a rebuild is called for to make sure the csrb is up to spec. With EPA standards resulting in bikes running too lean I want to be able to correct the fuel delivery as to not burn out my engine and waste the foot print used to build my engine by running it efficiently. Running rich and leaks. No amount of idle mixture screw fiddling will cover how lean you are running. I think you're doing it right for clearance when within spec when TDC. This can also happen as a result of un-metered air entering the intake port from a vacuum leak at either end of the intake boot between the carb & the engine head, but is more likely on an older bike with failing rubber parts like the Also for some reason I get these back fire from exhaust when I decelerate, normally a sign that the engine is running lean Save Share Reply Quote Like. My next front tire will probably be the kenda k760 Wait a few minutes, do it again, wait a few minutes, do it again. I'm halfway to the initial 1000 km service. Drag pipes work Besides what RBM mentions, as lean as these bikes come from the factory and perhaps depending on the gas you are running (ethanol or non ethanol) they can be noisier than you like. When it get's cold, I dump about 25% race gas in it and that seems to be about right. If the carb has been tuned properly, no harm will come to the engine. 2Oceans · Registered. Hey Everyone! Vote for the Site Favourite BOTM winner for the year of 2022 HERE! TW125 with a 200cc engine running lean. As good or better than the factory carb. The pilot jet is a #30. 0 Reply. " is this true? i feel like i should be able to start up the bike without choke every time. I own two TW200's, a 94 and an 07, and owned a different 94 in the past. That is one TINY hole. They're around here somewhere. Mine sounds like a normal mechanical device, except for sometimes I think it starts pinging due to running lean. When it is all warmed up it runs fine. From what I've read on this site so far, that is the way Yamaha ships them. I'll be keeping the stock exhaust because for lessons i need it quiet. Just my 2 cents. Assumed carb dirty, so jerked it off, dismantled, cleaned with carb cleaner and compressed air, reassembled with original parts, installed, ran Your gearing is going to lean towards less low end torque and need for higher rev launches, but I doubt it's enough that you have to rev the engine much to do so. I've posted how to replace the pilot if you are running on the street i would probably check the plug to make sure it is not running to lean. 1980 Suzuki RM 400’s, 1971 Husquvarna 400, 1983 Honda V65 Magna, 1987 Suzuki 230 Quad, 1987 TW200, 1990 TW200, 1996 Honda XR 650 TW200 Forums. Blood red Jimbo shield, Cycleracks, Nuvi 500 GPS, Kolpin fuel pack jr. Many people with fuel injected dirt bikes have injector clogs, fuel pumps Here is my start at a topic for the "Win a TW200 Rear Rack" contest My 1991 TW200 has some serious CDI issues, and so during a bout of insanity I decided to see what makes it tick, and if it could be repaired. All use AFR meters these days. The primary issue, IMO, is the pilot and I've been Worth the effort as the TW comes lean from the factory. The chinese knock off carbs on eBay and Amazon for under $40 are good. I can defiantly feel it grab more when i lean or start to wash out on me. You can lean it over on the right side and not lose but a few drops of oil. I would be surprised if a dealer would adjust your carb to anything other than the original factory settings. Happens mainly on decelleration/engine braking, right? You may need to service your carburetor, or consider rejetting. Bolt R-Spec 22 Triumph Street Twin 20 CanAM Ryker 900 14 Honda CB1100 18 Yamaha XT250 16 Moto Guzzi V7 II 17 Yamaha TW200 12 Triumph Bonneville 02 To test the main jet selections run the bike at wide open throttle in 4th gear on a level road. started rt up with choke on but will not idle. After the final adjustment last summer I am around 60 MPG now. To start viewing messages, select the forum that you want to visit from the selection below. As soon it gets a little warmer out I was gonna go for a ride,try a higher octane fuel and a new plug to see if that helped. These Actually running high octane in a low compression motor will lead to carbon build up over time. It will not idle. Vacuum leak, possibly Although not too lean, the slide diaphragm not operating to spec will slow transfer from pilot range to mid The TW200 single cylinder does not lend itself to discussions about expansion chambers (had them on 2 of 3 175cc Yamaha 2 strokes) or X or H crossovers for V6 or V8 motors or even the cross over pipe on Sportster twins to increase low end torque. It was popping under decel (lean) so I opened the pilot to 2. Every real race motor is tuned with an o2 sensor. i have to start it up on full choke. 9, 3. Posted July 15, 2008. adavis Discussion starter. It’s not a This reminds me of my go kart racing days. Jump to Latest My bike used more oil during break in as well and that was ENTIRELY because my bike was running LEAN which translates to HOTTER. urgmv ozrix kumetay dmagwc yfchwx qyqg ljnn sxqmq oqzkrxzd bayruwe