The guy I bought it from (with 1100 miles) had the stealer remove the AIS, installed 3" HK pipes, a Barons big air kit, and was re-jetted according to instructions with the BAK. I'm curious to see if you have it figured out yet. Also check for any cracks on the spark plug wires. For some riders, they find their motorcycle is accelerating unintentionally. This maybe the case if the plug was wet and you dont want an emgine fire. anyway. To recap those revisions: women are still worth 10 points more than men in all age brackets, but teenagers now rack up 40 points, and toddlers under 12 now rate a big 70 points. A small engine like that that idles ok but bogs under acceleration is usually one of three things; 1) air leak at the intake boot. It receives a spark from the coil to ignite the proper air/fuel mixture. The first is within the ignition coil, second the spark plug wires, and the third being the spark plug(s). Unfortunately, a few mechanical issues on motorcycles are inevitable, especially if you have an older one. When I took it out for the test drive, it rode quite well. Old ethanol fuel turned to gel? I can punch it 1st gear,it will pull for a split second,cut out. I have an '05 and experienced SVS. Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. On the XRL200 I have a metal fuel tank so I look inside the tank with a torch and shine light on the fuel tap filter check to see if there is any visible blockage. My next stop is the fuel drain screw on the carb. Happiest at about 5/6/7000 rpm. I'm jetted with 170 main , 37.5 pilot , 4th groove w/washer and spacer under the clip. Are these OEM plates or aftermarket? To do this, you'll want to remove the spark plug wire from the spark plug, remove the spark plug and examine the plug to determine if the tip of the plug seems wet. This condition is typically an indication of a fouled plug or that the fuel system is delivering too much fuel to be ignited on a consistent basis (which is that 'sputtering' sound you often hear under acceleration. Rust and debre in the tank? Soaking the clutch plates will not do anything for you're problem. My first stop was to check the spark plug and related components because this is the easiest and quickest thing to do. And don't let the dealer do it. A dirty air filter not only flows less air to the carburetor and engine, but it's more likely to allow dirt pass by and reduce the lifespan of the engine. If theres a vacuum leak, that means the carburetor isnt giving the proper amount of air to the air and fuel mixture which will ultimately result in sputtering and poor engine performance. Since you have checked the clutch basket and found it is ok then I would make sure you have the plates and friction disks in order. This page was generated at 1 minute ago. 2021 Strictlymotorcyles. The most likely cause for a dirt bike to sputter is going to be fuel related and that will lead you to the checking the spark plug, including the cap, lead and coil, and the carburettor setup. The screws of the engine are tightened during tuning. The air filter is usually located inside the air box if you have one, or if you have a newer motorcycle the air filter is sometimes located on the side of the engine. If no fuel runs out then there is no fuel in the carb so a blockage is somewhere on route. Test the cap using a multimeter. If I punch it idle to wot it has no noticiple sputter. I can shift to 2nd,punch it,it pulls for split second,cuts out. Even a minor fault in the ignition can cause your bike to hesitate. Trapped dirt or corrosion in the spark plug is the reason your motorcycle hesitates. If it is just sitting upright only the bottom third or so of the clutch will be in oil. This bog often feels like a 'burble.' Your throttle response feels slow and thickened, like when you're riding in a gear or two too high. Keep the air filter clean, whether you have a 2 stroke or a 4 stroke. I just bought new spark plugs so when I get the old ones out I will let you know how they lookthanks again Thundrhd! Not sure what you mean by 1-4 diff than 2-3.do you actually mean that plugs 2 & 3 may have been a diff model# plug than the 1 & 4 plugs? i was riding on my pal stock bone fazer6 one day, travelling at speed 60km/h at 6gear , i accelerate hard as i pass the car ahead of me when i feel the bike stuttering (sound like when you do a clutch-in while accelerating) from rpm 6k to abt 8k but the bike was fast. You need to clean your spark plug. I tried a 170 thinking I was to rich in top and had backfires and pops on decel. A notched clutch basket will not allow the fiber plates to slide & disengage. You followed the info on page 150 of the repair manual? How hard is it to open up the carb and clean it? Thanks for the quick replyI just shot some more through the carb and went for a quick "rough" ride and noticed something else (not sure if this helps). There are several reasons why a motorcycle sputters. The 1200 Custom motorcycle combines all the agility and kick of a Sportster model with the big, fat attitude of a custom cruiser. It is important to remember that when troubleshooting like this you are eliminating problems to then find the cause of the issue. Any chance you got crappy gas? Vibration can come from just about anywhere in a motorcycle and it can make your ride miserable. Click here to see our article about other reasons why a motorcycle leaks gas. This site is owned and operated by Project Dirt Bike, a limited liability company headquartered in UK. It seems that slightly higher engine rpm's help with this issue. Also make sure the point isnt worn down and that the gap between the center and the ground electrode is the appropriate distance. Another easy thing to do it to check the air filter condition. The ht lead is a basic component that is best tested with the coil as one unit. Top Gear by 4 Star Men's Size 42 Motorcycle Jacket Black Leather Riding Biker. You're on the right track, it seems to be getting better with the seafoam in the tank, being that you don't know how long the gas has been in there, drain it out, put in fresh & run seafoam through the fresh gas as well. I took the Basic Safety Course and recently bought a 1996 Honda Shadow VT600 VLX. VTX Cafe Forum is for owners of Honda VTX 1300 or VTX 1800. The only way that I can theorise this situation is that the second gear pops out at high rpm and the engine hits the rev limiter making the rider think that the engine is sputtering due to other causes. Kyle currently works as a mechanical engineer and graduated with a minor in automotive engineering. The petcock has a vacuum line as well as part of the emission system. I recently acquired a 2004 Honda VTX1300c used with only 6,000 miles. The dirt is also blocking your air filter. After a vacuum leak, a gas leak is your enemy. has it got a sidestand/clutch cut out switch? Fuel pump still on? when you get low it isn't engine breaking its idling. There is a high chance that your sputtering dirt bike issue is fuel related so I start with a couple basic things then end up on the carb. Normally one I'm doing 60 miles per hour, I slowly throttle to gain more speed, but the bike starts to sputter as if . Sponsored. Replaced fuel filter lately? You are running lean AFR a tad over idle other throttle positions it will run fine is this the case? Think of it This way, Ken Our Ponies may not be fast, but they Love to Run! Typically with most pit bikes, the problem is going to be with the spark plug or the carburetor; with the fuel system being the primary culprit. Vacuum leaks are usually caused by cracked or brittle intake boots (or the clamp around it isnt tight enough). I'm pretty sure I have at some point in the past, but I'll try again to see if there's any difference in it and I'll post a result. The first part documented the strip down process and laid out how I went about Shaft drive is an alternative power delivery method used instead of chain and sprockets. Cannon Entities LLC is compensated for referring traffic and business to these companies. May need a DFO or similar to eliminate a lean condition. At this point, you'll see two gold screws. If youre unsure your spark plug wire does this, try to pull and un-thread yours apart. I have noticed, however, that after riding the bike around for ~10 minutes (this is what I noticed on my commute) when I am at a low throttle level in first gear that the bike stutters and jumps forward a little bit. First we want to make sure that the right sized jets are being used in the carb. Not quite the same as the TPS thing. I give dozens of tips and tricks that you wont find anywhere else online. Click herefor more information if youre interested in viewing multiple videos that will help fix up your bike or if youre interested in completely building your dream motorcycle! It runs well, except when taking off from a stop. No hesitation in throttle. But jokes aside, my little CBR also stutters under 2/3000 rpm. I also put some in the gas tank and the tank is still not empty so I thought it may also be the gas that had gone bad (this is the gas that was in there when I bought itit was a full tank but who knows how long it had been sitting in there. It affects the speed of your bike as well. When I brought it home, I noticed the choke had been slightly pulled out so I pushed it all the way back in. You go for the next gear, twist the throttle, and immediately feel the intermittent loss of acceleration. It feels like it's going to stall but I tested it today and in first gear it sputters then smooths out and keeps riding under its own . If you carb is starved of fuel it will cause sputtering because it is effectively running out of fuel. For a better experience, please enable JavaScript in your browser before proceeding. Put everything back together and check the performance of your pit bike and the 'sputtering' issue. If the exhaust valve or the intake valve is open, that can cause your bike to stutter too. Just started to experience in the last 2 rides (within this week) my engine having low rpms at start up, engine sputter/surge/backfire off and on while riding in 3rd/4th gear going 30-45 mph, and the engine feeling like its choking. Obviously have a container on hand to catch the fuel. Protecting bike from drops while practicing low speed drills. It's early in the morning and this is the best that I can come up with. It can materialize in the form of a sputtering engine, inconsistent energy flow, and overall failure to accelerate even when the throttle is twisted to full mode. same here, my bike won't take off like a jack rabbit at 50 in 5th but it pulls hard and steady and certainly doesn't sputteryou need a tune up.. All times are GMT-6. Your bike can malfunction if you dont have the proper tools to repair the carburetor or the spark plug. and is there anything else I should look for. You'll have to unscrew the top plate from the base of the carb and pull the slide out. No, no, no. Lug NutI think the bike is all stock and don't think any mods have been done to it. The setting dictates how much air can pass the screw and the more out the screw is turned the more air passes. 2. The report focuses . UPDATE: thanks everybody for the information it seems it's a standard of our bikes. At StrictlyMotorcycles.com we cover all things motorcycles. 1. Try shifting into fifth at 70. Sometimes the filter may be to saturated in oil from who ever installed it. Polished fins/Painted Engine, BadX Seat, STUMP Rad cover, Spyker/Decap K&N Airbox, Progressive 412 & fork springs, DynaBeads, V&H Cruzers, FP Jets, De-Paired, Glen's CPR & AF Screw, ISO grips, Kury Hwy pegs, CRAP plate frame, CRAP Shaft Cover, PhatRisers II, NC SB Chopped, Rivco Solo Rack, viking bags, Kury engine covers, ME880's. You have a container on hand to catch the fuel drain screw on spark. Can malfunction if you have an older one the coil as one unit the fuel drain screw on the plug... 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