Twice in the past 5 weeks, the bike has done the follow: I'll be riding along in 5th gear at around 50-60 MPH. Old enough to know better; still too young to care. My rancher got stuck in 2nd gear today. The bike is sputtering under hard acceleration, almost. 2000 big bear 400 spits and sputters blows gas out back of carb into air box at half and full throttle put on a new - Yamaha 2004 Big Bear 400 4x4 question Search Fixya Press enter to search. Next is the cap, it worth checking this even if you are replacing the spark plug as the problem. 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. Here are a few factors that cause bikes to sputter: One of the most common causes of sputtering is a malfunction in the ignition. . If the fuel isnt being restricted enough then you will be running to rich, which means to much fuel is getting through. JavaScript is disabled. Maladjustment in the screws is the last issue in the carburetor category. Ignition coils have really high voltage and is dangerous to handle if you dont know exactly what youre doing with it. I use this to help dislodge any debris, then drop the jets into a little pot of carb cleaner which will free up, break down and clean anything unseen, then use an air line to blow it out, which should also bring out any remaining dirt, dust and debris. Making sure everything is functioning as it should and that it is clean. Its a beast. BK breather , PMS about 2.5 out and BUB jug huggers. If you have any gas leaks within the carburetor, it will starve the engine for fuel which will cause the motorcycle to sputter. Carburetors have been a great mechanical product for older machines and usually does a pretty good job with providing the right air and fuel mixture the engine needs to power the motorcycle. Essentially, their Can A Loose Motorcycle Chain Cause Vibration? Other culprits could include corroded or cracked spark plugs or spark plug wires, a faulty ignition coil, a clogged air filter, or engine timing issues. There are different ways to avoid motorcycle bogging on acceleration. A one-stop center to cater for more than your needs. Jun 16, 2010. Fuel Component Problems. 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? Mine stopped doing that after I switched back to my stock exhaust. The . But they can get finicky (which is why the switch was made to fuel injectors) and can cause a slew of problems with your motorcycle if some small part inside isnt working right. I have a fair few years riding experience but next to none when it comes to mechanics so you will witness my steep learning curve. This site is for enthusiasts and curious minds.We love All Motorcyles. In contrast to sputtering at the lower end, you may be getting it when you are at full throttle, and when bad it can cause the enigine to cut out. This site is owned and operated by Project Dirt Bike, a limited liability company headquartered in UK. It sounds possible that it is an electrical issue. If the plug looks wet, or if you notice a reverse condition where the plug appears very dry (which is an indication of a lean fuel situation which can also cause sputtering), we recommend replacing the spark plug with a new NGK spark plug first. A properly functioning accelerator on your motorcycle is critical to having a fun and safe ride. When accelerating at a high RPM it will get moving but then start to sputter and sometimes the engine will pop but going into 2nd and higher gears it seems to do just fine with just a small bit of hesitation. If your motorcycle is sputtering at low RPM, you have come to the right place. . If I punch it idle to wot it has no noticiple sputter. Using a screw driver to undo this screw will allow fuel to run out of the attached pipe. If its not the same then go with the service manual. Check for vacuum leaks. When I'm engine braking the bike gets really sputtery in the low RPMs from about 3000 to 1500 but then after 1500 smooths out. In this one I show you a quick way of identifying the cause of a slow speed single cylinder misfire. If it stops, you know that it's a clogged vent line. And don't let the dealer do it. Start by checking the easiest spot first which would be the spark plugs. Spark Plug Misfiring Causes the Engine to Stammer, Gasp. Any chance you got crappy gas? Started by ElVispo, 01-25-2022, 08:34 AM. If the spark plug cap is a deep one and you cant get the probe to touch the spot then you can use a screw driver to extend your reach and it wont effect the multimeter reading. The three things you need to create an . Join this community to discuss mods, specs, parts & more! Motorcycle Shop Owner/Operator 79 Kawie Z1000 LTD 81 Kawie Z1000 CSR 83 Honda VT750C A 85 Kawie GPZ900 A2 86 Zukie GS1150 EG Sponsored. Most sputtering issues can be linked back to the carb. Come join the discussion about performance, modifications, troubleshooting . For example stock settings may say that the screw needs to be out 1 & 3/4 turns. They have the appropriate tools to make it a quick and easy tune up and will usually do it for around $50. Come join the discussion about performance, track racing, modifications, troubleshooting, maintenance, builds and more! Normally one I'm doing 60 miles per hour, I slowly throttle to gain more speed, but the bike starts to sputter as if . Any idea what it might be? I've noticed that while this happens, if i close the choke a little bit (turn it on?) It is important to remember that when troubleshooting like this you are eliminating problems to then find the cause of the issue. 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. You might be interested: Often asked: How . Fuel pump? Next, turn the bike off, then turn it on again and watch the check engine light. This means it was set to 2.5 turns out. With the multimeter set to OHMS in the 1k,10k or 20k range if your doesnt have 10k or 1k like mine doesnt. How To Recover Them? After a vacuum leak, a gas leak is your enemy. vtxcafe.com is not in any way affiliated with Honda Motor Company, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Corrosion is more common in older bikes. Thanks for the help. Can you convert from a carburetor to a fuel injector? Check wiring to injectors. How do you fix a motorcycle running rich? 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. What is your bikes setup? Some carburetors have several other vacuum ports in the case the owner wanted to do some other customizing to the carburetor, but most people dont end up using them. I'm not lugging the engine but even if I were the bike never did this before. If the idle circuit is clogged or narrowed, the bike will run poorly or die when the throttle is let off or at low RPMs. I knew since the bike was sitting I would need to do some much needed things (I have done an oil change, new k&n air filter, and cleaned the carb using seafoam and then pouring some in the gas tank as well). This could come from rust forming in the tank or just other dirt and debris. I have an '05 and experienced SVS. 3. First, I'd check your primary chain like the others have suggested. If the needle is jamming and not letting enough fuel in then you could be to lean and the spark plug end may appear to dry. ). To check yours you will need to wind the screw in and make sure you count the turns. Gear Bog - This happens when you're riding your motorcycle in a gear that's too high for the situation. Some people change their jet sizes to accommodate certain conditions or to acheive a different performance from the bike. Gear Bog - This happens when you're riding your motorcycle in a gear that's too high for the situation. You can usually tell if this is your culprit because you will easily notice the smell of gas and will be able to visually see any leaks that are happening in the area. OEM carbs would be around $1500. Vacuum leak on the carburetor or intake boot. My first bike build - Roadstar 1600 Cholo / Vicla project by ElVispo. Starts fine. Press J to jump to the feed. 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. Ill discuss the most common reasons for sputtering. Privacy Policy. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Have you tried accelerating to 70 in 4th & Then shift? Lets find out the reasons for your bike sputtering. I bought the bike used back in April, so I don't know the history of it. Tesla has finally started to open some Supercharger stations to non-Tesla electric car owners in the US, and it explained how it works. I wish I could have taken a photo of my intake valves.they looked pretty dirty considering I've only got 15,000 miles. Check the manifolds for cracks. Remove the spark plug and examine it for problems carefully. 2021 Strictlymotorcyles. 60 mph in fifth isnt lugging in my book. Any suggestions would be greatly appreciatedI am knew to working on bikes but just picked up the Clymer's manual to help with gaining more knowledge about the bike. Take out the spark plug and first do a visual check. Thanks! Remove and make sure TPS plug wiring is clean and tight. 5th,pulls then cuts out. if it has clean connections or bypass the switch. Clutch lever action is smooth, stiff or doesn't want to move? Motorcycle Mechanic. 1. Over the past week I've noticed that the bike wants to sputter when I start of in first using low rpm. Below or above these speeds the bike runs fine. If the spark plug is working well, the likely issue could be with the wires. This is probably the least likely case with the ignition. R. The dirty air filter of the bike will prevent the flow of air in the fuel mixture. UPDATE: thanks everybody for the information it seems it's a standard of our bikes. It has been a long time coming, but we also knew it was . You must have JavaScript enabled in your browser to utilize the functionality of this website. A malfunctioning spark plug will cause the cylinder its connected with to misfire which will ultimately cause performance issues and the motorcycle to sputter. Ensure the bands used to tighten the manifolds down on the carburetor are secure and have . Even a minor fault in the ignition can cause your bike to hesitate. At some point the screw would of been fully in and you may of managed 2 whole turns then a half turn on the third rotation. A vacuum leak in the carburetor can cause sputtering. This series also includes other hard-to-tackle components such as body work and electrical. I recently picked up a 94 kz1000 police bike. Press question mark to learn the rest of the keyboard shortcuts. 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. In first or second gear acceleration, I have to throttle up slowly, or else it starts spluttering and coughing and and missing. This site is owned and operated by Cannon Entities LLC, a limited liability company headquartered in Utah, USA. It wont stall but will feel like that because it likes to be up in the rpms. If you don't want to pull the plates you could lay the bike on the clutch side and I think that the oil would pool in the clutch area and maybe soak your plates. There can be a big issue behind this minor problem. All of these factors combined will affect the performance of your bike. I think it has an auto tensioner on the primary so maybe it is not working right. IMHO he shouldn't really "need" new plugs with so many few miles on the bike, but if it has ever or is suffering from SVS his plugs could indeed be fouled due to running too rich.common problem with the '04 and '05. Content on vtxcafe.com is generated by its users. 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