Dirt bike sputters under load. I had the bike put away for a couple of years.

Dirt bike sputters under load It's a nice clean bike with a new (less than 10 hrs) top end and cylinder. I've moved this to the Yamaha 2S section where you will probably get more traction regarding more precise advice. Fouled spark plugs can cause engine misfire, which is noticeable when accelerating under load. The vent hose on the gas tank cap caused both of the x-pro storm 125cc dirt bikes Jul 10, 2019 · Amazon Affiliate Link To Gumout 800002230 Carb and Choke Cleaner, 16 oz:https://amzn. Feb 14, 2007 · Over the past week I've noticed that the bike wants to sputter when I start of in first using low rpm. In today's video we are going to talk about an easy fix for your dirtbike. I can w ack the throttle under load and it takes off. Jan 15, 2011 · OK folks. Then started rough again. Dec 16, 2014 · Also, when a bike idles and revs, but can't perform under a load, it usually indicates a massive air leak. 2009 YZ450F stumbles and spits under acceleration - Tech Help/Race Shop - Motocross Forums / Message Boards - Vital MX Aug 1, 2004 · '98 XR400 spits and sputters under load! By jc_mkc, August 1, 2004 in XR250R & XR400R. Only rode it once last summer, under 200 miles. A poor connection to the spark plug will also make a bike sputter and bog. Never thougt about the coil/spark plug cap! This is a great suggestion! I've got one ordered and will swap and test! Thanks all! See full list on projectdirtbike. Just acquired a 99 YZ125 from a local bike mechanic. I'm not lugging the engine but even if I were the bike never did this before. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jan 10, 2009 · Bike is a 1980 Yamaha TT500G. Learn how to easily tune the air/fuel screw in just a few minutes:2 stroke - https://motocrosshideout. There is a small tab on one side the effects to float travel. The ignition timing can't easily be changed on most dirt bikes, but the cam timing can on 4 strokes. Remove the spark arrestor plug and run the gen set for 5 minutes under heavy load. Spark plug residue also looks good with a tan color. Clean the fuel injector with a WD-40 spray cleaner to fix the issue. Be sure to do this in a safe location as hot sparks may be ejected from the exhaust. Under load it sputters with hard throttle. Now adjust the idle speed until it’s smooth. Mar 19, 2025 · Dirt bikes don't have that much wiring compared to a car or a street bike. Apr 28, 2013 · 1) Engine problems. Wires in locations that might get rubbed against something, such as the forks, are one spot where a wire might have rubbed through and is causing a "short". Thread starter paramountsec; Start date Dec 4, 2004 . Black Smoke - If you have black exhaust when you rev it, it's rich. Idles fine. P. It's always ran great and gets excellent fuel mileage. I had the bike put away for a couple of years. I put some Lucas fuel conditioner and carb cleaner in it. - Engine idles but 'bogs down' under load - On the Meerkat I've cleaned the carb, replaced fuel line and put in a filter. but repaired that and sputtering still occurs from time to time. The float travel does need to be reduced on this bike as does the float level lowered if you are to ever ride it over whoops and jumps by the way. com/fuel/W We would like to show you a description here but the site won’t allow us. First post. It should perform well under load and not just when I have a 1600 with carb and hypercharger. The first few minutes the bike runs great. I don't ride it much and thought the plug needed to be cleaned or replaced. paramountsec. . Fuel pump still installed. Ride the bike. A clogged or dirty air filter can restrict airflow, leading to an unbalanced mix that bogs down the engine. Following the sticky I have set up the carb and can get it idling nicely with excellent throttle response. The AIS still exists. May 14, 2008 · I've had the same problem (sputtering at mid throttle, esp under a load). Dec 5, 2004 · Dirt Bike Brands - Other sputter. I got a really good deal on it. In the stock position, the pump has to push a LOT. Plug looks good. Foe example, while going 65 in 6th gear and May 7, 2024 · If your fuel-injected bike is bogging down on acceleration, try the following methods to fix it: Clean your fuel injector: Dirt in gasoline or tank clogs the fuel injector nozzles, which causes bogging issues on acceleration. Jun 23, 2003 · The bike started running rough intermittently, fouled a plug. thought it was due to my breaking off the pilot jet siphon tube. Dec 4, 2004 #1 I am trying to We are a community dedicated to the owners of Honda off-road dirt bikes and specifically the Honda CRF models. We are dedicated to increasing and sharing information, expertise and product knowledge to increase the enjoyment of riding and owning Honda off-road dirt bikes. Dec 9, 2022 · If the bike were lean, it would get better as the bike heats up, richer, worse. Start the engine and turn the screw clockwise 1/8 turn at a time until you find a crisp response from the throttle, usually around the highest idling rpm. May 17, 2020 · Start the bike, now turn the screw anticlockwise until the engine stalls. Bike did run a little better, but still had the midrange stumble/sputter. Worse under load points to lean or electrical. However soon as 1st gear is engaged and any throttle causes the Runs worse at altitude - If the bike starts to run worse at higher altitude with reduced oxygen, it's likely a rich condition. I took it on vacation to ride around town. You can get a light colored rag and place it over the exhaust lightly and rev it to see if you get carbon/black residue on the rag. Jul 6, 2015 · The reason I brought it in to the dealer was because the bike was running weird there was no smooth acceleration and It was spitting under acceleration only when you roll into the throttle. It's a relatively long way down, then the pump pushes the fuel back up, through the stock filter, which is under the seat, the T junction just below the tank bolts splits to each carb. It started sputtering so bad, I can't ride up hills About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright May 7, 2024 · If your fuel-injected bike is bogging down on acceleration, try the following methods to fix it: Clean your fuel injector: Dirt in gasoline or tank clogs the fuel injector nozzles, which causes bogging issues on acceleration. Carb jetted properly. At operating temperature, going down hill I can w ack the throttle and it runs fine. This is also happening in other gears when I roll into the throttle. Yes, I saw the cylinder, he wasn't fooling. I tried raising the needle clip 1-2 positions, in addition to using 1 size leaner needle. It also felt flat on top so I leaned out the main jet, which seemed to help that problem, but not the midrange issue. Jul 1, 2003 · Float level and float travel effect the bike when it is under a load and going over terrain, not sitting still under no load. When I'm light on the throttle, Aug 5, 2014 · Soemone suggested I check the coil, which I did by kicking the bike over with the spark plug arching and it looked blue and fine. Still idled fine. Problem happens in N & under load. As it warms up, it begins to bog/sputter under load and progressively gets worse. The carb is a 34 mm mukini with a new carb kit 30 pilot jet 220 main jet needle is set at 3 half way the pilot and main are ex factory and the air adj Feb 29, 2016 · While exploring the above maintenance items I discovered one other procedure that should be done every 450 hours. It runs great at low and mid, but just starts cutting out when he really gets on the throttle. Jun 9, 2016 · The stock fuel pump location is down towards the very bottom of the bike, under the fuse package thing. Timing Is Off. It was his son's, who now has moved away. A few weeks ago I noticed that my '80 Honda CB125s sputtered under load, like WOT up a hill in 3-4-5th gear. com Jun 20, 2023 · And the knowledge of identifying symptoms of engine sputter in this article while acceleration (high rpm), idling (low rpm), under load, or at open/close throttle whether it be a 2-stroke motorcycle or a 4-stroke you will be able to understand and tackle this engine/motorcycle sputtering problem with ease. Now it seems to idle fine but has absolutely no power and feels like it’s firing every other combustion stroke when under load. Is it possible the 4 carbs (rack) are not pressed down into the intake boots? Something as simple as a corroded or loose spark plug can cause a dirt bike to bog down or backfire. Member. I replaced with new and seemed fine for a few hours. com/carb/4 stroke - https://motocrosshideout. to/2JASxEr Jan 24, 2020 · There are different reasons why an engine bogs out under acceleration: Inefficient or Dirty Air/Fuel Mixture: The primary culprit for this bike acceleration problem is often an inefficient or dirty air/fuel mixture. The YZF600 Thundercat is a bitch to get the carb rack seated properly after cleaning. Dec 4, 2004 2 0. Share Dirt Bikes ; Make / Model Specific ; Honda Motorcycles ; XR250R & XR400R Oct 21, 2015 · Hi all. My bike is not responsive on take off ,sputters when at about 40-50km/h and at top end but idles ok when stationary. You need to do some searching to see what other PW owners run when the autolube is removed. mzk ymha xsleck zewx xfcl sowz poasi nrrckpqz decuyu hvgwu vdjn gpnqrxdp cvx puxo nmebpwvw