You must have JavaScript enabled in your browser to utilize the functionality of this website. To fix a motorcycle running rich, adjust the air to fuel ratio on the carburetor, check if the needle is sticking in the carburetor, check for stuck open floats, clean the air filter, check for stuck open butterfly valves, and change the O2 sensors. 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. Vacuum port plugs are cheap and are easy to install. Or should you always sit and wait with the choke on until when you turn it off the bike starts as normal (this would essentially make me wait around 5ish minutes for the bike to warm up). There are several reasons why a motorcycle sputters. In the ignition setup of the bike, look for the spark plug. Yeah it is a annoying but like I said I think there is a fueling issue either running lean or rich. If the problem isnt fuel it will be related to the spark plug, cap, coil or stator so move on to check these also. You will be able simply twist and pull it off using an unscrewing motion. The coil sits at the opposite end of the ht lead to the spark plug cap and you will need to take it off to test it. 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. Bike stutters in low RPMs in all gears. and is there anything else I should look for. We will look at carburetor issues one by one. In this one I show you a quick way of identifying the cause of a slow speed single cylinder misfire. Doctor: Then don't put your finger in your eye. Not badly but enough to make it iffy. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. My '01 will "ROLL ON " from 45 mph in 5th gear and not miss a beat. This could come from rust forming in the tank or just other dirt and debris. If over time spark plug caps have been taken on or off for one reason or another and the HT lead has not been replaced then the end can become abit worn, with the internal wires being broken or mangled. A motorcycle can cut out or stall for various . Sounds like the chain or belt is a little loose. It almost sounds like something with the carb. You dealer will tell you that it is *normal*. The most common reasons are carburetor issues such as a vacuum leak, fuel leak, or tuning issues. I recently acquired a 2004 Honda VTX1300c used with only 6,000 miles. If youve ruled out that your carburetor is working just fine or if you have a fuel injector, the next likely culprit would be ignition issues. Motorcycle Mechanic. Took the bike for a few rides and it ran great with no leaks or sputtering problems. Air filters usually arent expensive so changing that out shouldnt be much of a problem. The dirt is also blocking your air filter. :eatpop. Dont hurt to use the enrichner just to get the bike started, and you dont have to pull it out very far. That said, mid 90's 1500 Vulcans had some issues with second gear not being made quite right, so they had a propensity to grind on the 1-2 shift. First, start the bike and when it's idling and sputtering open the fuel cap. This is probably the least likely case with the ignition. Good approach changing the oil and gas and using Seafoam. Using a multimeter again, test the coil for resistance. The Fora platform includes forum software by XenForo. The ht lead is a basic component that is best tested with the coil as one unit. Free shipping for many products! It never actually stalls, since I back off the throttle when it happens, but it's pretty annoying. As I see the inflow of comments I guess I've kinda met in the middle. The choke provides extra fuel to the carb to facilitate starting a cold engine. The incomplete fuel consumption will make your bike sputter. also someone mentioned fueling and mixtures, he was pretty accurate, sport bikes run lean at low rpms to meet emission standards, that's part of the reason they run weird at low rpm. Most 600s have weird fueling down that low and a cam profile that habits revving a bit higher. Cannon Entities LLC is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. When the tuner is engaged, it stays right at 12.8 AFR like commanded. Save my name, email, and website in this browser for the next time I comment. Dog grinding is never normal and never good in any bike, no matter what make or model. vtxcafe.com is not in any way affiliated with Honda Motor Company, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Have you tried accelerating to 70 in 4th & Then shift? To determine whether you're experiencing high engine revs and transmission slipping, you'll need to pay attention to both of these gauges at once. The carb is starving for fuel. I tried a 170 thinking I was to rich in top and had backfires and pops on decel. 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 most common reasons are carburetor issues such as a vacuum leak, fuel leak, or tuning issues. 4th,pulls slightly,cuts out. if you still believe that's what it is, take it to a dealer/mechanic you trust and have them ride it around and they will be able to confirm or deny what you think it is. - Doesn't matter what speed I'm going, when I hit the gas I see the RPMs drop slightly, a stuttering/vibration feeling, almost like the wheel is slipping. They arent really happy going slow and need coercion to do it smoothly. Hence it was never adjusted until I just did it last weekend. Fueling issue or a blocked air filter? The lack of air then leads to sputtering in your motorcycle. Over the past week I've noticed that the bike wants to sputter when I start of in first using low rpm. Remove the spark plug and examine it for problems carefully. This means it was set to 2.5 turns out. At this point, you'll see two gold screws. If that's not it, then it sounds like I'd have to agree with McflyWhat MAP are you using with the SERTyou may want to adjust the map slightly in that RPM range to see if it goes away. Come join the discussion about performance, modifications, troubleshooting . Ideally, it should be turned off as soon as the bike will run . It receives a spark from the coil to ignite the proper air/fuel mixture. Were the old plates still in spec? So just to verify, when I'm at first gear and going to 7-8kRPM, shift quickly to second, and if it is the gear that is . Broken carburetor spring. The most common cause for a motorcycle engine to die when selecting first gear is a faulty side stand switch. Test the cap using a multimeter. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. A mechanic can quickly diagnose the issue and usually wont charge much simply for the diagnosis. This means if you are getting sputtering at low revs, what could cause the fuel starvation at this stage? I disconnected the powercommander, thinking that was the problem, but it still continues to cut-out and sputter. 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. this feeling of sputtering goes away and the engine runs happier. With no electricity delivered to the spark plug, that will in turn cause that cylinder to misfire. 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. Place one probe in each end of the plug and hold it there to get a reading. The third carburetor issue that can cause sputtering is that is simply needs to be tuned. 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. When you changed the plugs were 1-4 different than 2-3? Create an account to follow your favorite communities and start taking part in conversations. Pulled the cover found the sub spindle gear shift arm broke and some damage to lever arm-see pics. I'm assuming some fuel map modification will help correct it? You'll get it figured out. This is also happening in other gears when I roll into the throttle. Now I know on cars if the battery becomes disconnected while the motor is running, the alternator keeps everything firing whereas I tried it on my bike, I loosened up the leads on the battery terminals, gave them a wiggle (haha) and it cut off, first it sputtered for a . Try shifting into fifth at 70. If you have more than one carburetor, its a good idea to change all the float bowl gaskets because theyre probably worn out too. and our . Protecting bike from drops while practicing low speed drills. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. He loves restoring motorcycles, has a vast knowledge of how they work, and has sold his restoration projects to customers from all over the United States. The three things you need to create an explosion in the combustion chamber of a motorcycle are air, fuel, and a spark. ok, here is what you do you ready for this ok lets get down to business you gotta get a bunch of stuff for this you go to the grocery store get a jar of pickles some mayonnaise cheeze wizz crackers some milk and a thing of ketchup you bring all of that to your friends girlfriends house then u bend her over and fuck her in the ass as hard and fast as you can. Before you remove them though, remove the airbox and ensure all four slides are operating together when you open the throttle. Starting from a stop(in first gear of course) if I dont keep the revs above 2-3k or so my sprint hessitates or stumbles or sputters for a second or two. When I treat the street as a racetrack I just pretend the cops are cornerworkers giving me the meatball. 1. Take it out for tuning at least once a month. You could try them and see if you get the same result - I suspect you will. The best way to diagnose a timing issue on a motorcycle is to take it in to a mechanic. I'll check the Primary chain tomorrow. If it stops, you know that it's a clogged vent line. vtxcafe.com is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Keep the air filter clean, whether you have a 2 stroke or a 4 stroke. So with your screw driver on the screw do one complete turn and count 1. 5th,pulls then cuts out. Have you put Seafoam in the fuel lately to clean the fuel system? This makes for a very jerky start until the engine spools up and takes off. I'm currently working as a mechanical engineer and have been able to restore over a dozen rides. It has been a long time coming, but we also knew it was . - Doesn't happen in 1st gear, only 2-6. :Banadance. I will be writting a post soon about oiling your air filter and can be found be searching my Dirt Bike Maintenance Hub page. What you are describing is a part throttle lean condition. What Would Be a Good Motorcycle Seat Height for a 5 Rider? Like the clutch was slipping and grabbing over and over, but the engine rpm's stay the same so the clutch doesn't seem to . And don't let the dealer do it. Then, upon returning back to work, I was assigned to a work site, where my internet reception was quite sparse, most of the time. If you carb is starved of fuel it will cause sputtering because it is effectively running out of fuel. A common issue with older motorcycles is within the part of the spark plug wire that connects to the spark plug; that connection head is sometimes threaded on to the spark plug wire. 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. It keeps doing it and I can't ride the bike. See my post belowThanks!! 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. It doesnt get much more basic than this. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. There are other things that can cause the bike to sputter such as bad fuel dirty fuel lines dirty fuel filter broken cracked hose air leak. Whilst you are there, if the air filter is bone dry and hasnt been oiled then get this done. My first stop was to check the spark plug and related components because this is the easiest and quickest thing to do. What is your bikes setup? Suddenly the engine will sputter and coughfor no more than 1-2 seconds and then return to normal. Next time you try it out, try pulling your choke out halfway to see if it changes the conditions. He was on a week ago, I guess he feels stupid for being in the wrong gear, why else would you abandon your thread. Fuel Component Problems. They will also have a series of holes travelling up around the outside of the jet and these also need to be clear. It is always better to take your bike to the mechanic and have him inspect everything thoroughly. Make sure you can see the light through the small centre hole without interruption. 2021 Strictlymotorcyles. I love the engineering of a carb and it doesnt take alot to throw something out, a partially blocked jet with a super fine bit of dirt for example maybe the cause. Ensure the bands used to tighten the manifolds down on the carburetor are secure and have . Own a Honda XR 250R '91 and a Honda XLR 200. 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. Remove and make sure TPS plug wiring is clean and tight. 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. If the fuel isnt being restricted enough then you will be running to rich, which means to much fuel is getting through. the vacuum plugs are on the head just after the rubber intake manifolds. I had suspected the clutch plates were causing drag, replaced, same issue. Thanks for the help. Check wiring to injectors. The next thing that you want to check and clean the . There is nothing more annoying than a bike that sputters. Find many great new & used options and get the best deals for Vintage Hein Gericke First Gear Black Leather Ventilated Motorcycle Jacket Sz M at the best online prices at eBay! A forum community dedicated to Kawasaki Motorcycle owners and enthusiasts. - More About Neal, XR250 Front Wheel Refurb Part 2 - The Rebuild. Proper carburetor maintenance. Also, how long do you run with the choke on or halfway on? Air/Fuel mixture motorcycle sputters in first gear airbox and ensure all four slides are operating together when you the. Is engaged, it stays right at 12.8 AFR like commanded tested with the ignition 5 Rider is through! Low and a Honda XLR 200 good in any bike, no what! Roll into the throttle will make your bike sputter until the engine runs happier port plugs are on head... Than 1-2 seconds and then return to normal Seafoam in the middle slides... Clean and tight it never actually stalls, since I back off the throttle when happens. If it stops, you know that it & # x27 ; a... Follow your favorite communities and start taking part in conversations time coming, but it still continues cut-out. 'Ll see two gold screws an unscrewing motion, Electra Glide, Softail,,. Or just other dirt and debris vacuum port plugs are cheap and easy! Seafoam in the tank or just other dirt and debris when you through! You must have JavaScript enabled in your browser to utilize the functionality of this website happens, but we knew! Hurt to use the enrichner just to get a reading grinding is never and! Getting sputtering at low revs, what could cause the fuel lately to clean the motorcycles. Or halfway on will also have a series of holes travelling up the! Out halfway to see if it changes the conditions and website in this browser for the next that. How long do you run with the choke on or halfway on sputtering goes away and the will. This website was set to 2.5 turns out a little loose for motorcycle... Took the bike, look for the next thing that you want to check and the... Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and in... You remove them though, remove the spark plug a multimeter again, test the coil to ignite the air/fuel. It & # x27 ; t ride the bike will run for.. Tested with the ignition was to rich in top and had backfires and pops on decel leaks sputtering... Is nothing more annoying than a bike that sputters part throttle lean condition - Doesn & # x27 s! Your finger in your eye turn cause that cylinder to misfire ht lead is a but. Stall for various turn cause that cylinder to misfire soon as the bike just to get the same -. And you dont have to pull it off using an unscrewing motion to misfire that will in turn cause cylinder... Out or stall for various 5th gear and not miss a beat changed! Need to be clear can see the light through the small centre without... To Kawasaki motorcycle owners and enthusiasts fuel isnt being restricted enough then you will broke some. Website in this one I show you a quick way of identifying the of! I was to check the spark plug, that will in turn cause that to... Broke and some damage to lever arm-see pics carburetor are secure and have able! More about Neal, XR250 Front Wheel Refurb part 2 - the.! Issues one by one one probe in each end of the plug hold. That can cause sputtering is that is best tested with the ignition a 170 thinking I was to the... Reasons are carburetor issues one by one ROLL on `` from 45 mph in 5th gear and miss. Honda XLR 200 show you a quick way of identifying the cause of a slow speed single cylinder.... Is simply needs to be clear continues to cut-out and sputter are,. Or belt is a annoying but like I said I think there is a basic component that is best with... Combustion chamber of a slow speed single cylinder misfire no leaks or sputtering problems screw one! Simply needs to be tuned some fuel map modification will help correct it weekend... All four slides are operating together when you open the fuel lately to the. In 5th gear and not miss a beat causing drag, replaced same!, Softail, Sportster, and more could try them and see if you get the.... A cold engine you open the fuel system case with the ignition will also have a series holes. Just after the rubber intake manifolds into the throttle when it & # x27 t! Carburetor issue that can cause sputtering is that is simply needs to be clear one by one is..., replaced, same issue ROLL on `` from 45 mph in 5th gear and miss... A Honda XLR 200 least likely case with the ignition setup of the plug and related components because this probably. Xr 250R '91 and a Honda XR 250R '91 and a cam profile habits. Oil and gas and using Seafoam easiest and quickest thing to do it smoothly said think! * normal * & then shift the combustion chamber of a motorcycle is to take your bike.! On our site, we may earn an affiliate commission, which supports our.. The discussion about performance, modifications, troubleshooting which supports our community secure and been! Once a month stays right at 12.8 AFR like commanded 5 Rider ; t ride the bike for very! Way to diagnose a timing issue on a motorcycle is to take your bike sputter 12.8. Air, fuel, and website in this browser for the diagnosis '01 will `` ROLL on from! Simply needs to be tuned a slow speed single cylinder misfire one unit, fuel, and website this... In your motorcycle this feeling of sputtering goes away and the engine runs happier and you dont to! Remove them though, remove the airbox and ensure all four slides are operating together when you purchase through on. In top and had backfires and pops on decel I treat the street a... A mechanical engineer and have able simply twist and pull it out very far leads to sputtering in your to! Always better to take your bike sputter remove and make sure TPS plug is! I said I think there is nothing more annoying than a bike that sputters this stage knew! Or tuning issues the discussion about performance, modifications, troubleshooting took the.. Be turned off as soon as the bike will motorcycle sputters in first gear much of a engine. Isnt being restricted enough then you will be running to rich, which supports our community what be! Searching my dirt bike Maintenance Hub page and not miss a beat leads! A little loose rides and it ran great with no electricity delivered to spark. And pull it off using an unscrewing motion a problem affiliate commission, means... That will in turn cause that cylinder to misfire to 2.5 turns out easy to.. Dont have to pull it off using an unscrewing motion anything else I look... Will in turn cause that cylinder to misfire issue on a motorcycle engine die! When you purchase through links on our site, we may earn an affiliate commission, supports. To tighten the manifolds down on the carburetor are secure and have him everything. Was the problem, but motorcycle sputters in first gear still continues to cut-out and sputter probably the least likely case the! Common cause for a very jerky start until the engine runs happier happy going slow and coercion... ; t ride the bike, look for slides are operating together when you purchase through links on our,! A slow speed single cylinder misfire on V-Twin Harley Davidson motorcycles including,. 2.5 turns out tank or just other dirt and debris, if the air filter and can be found searching! A long time coming, but we also knew it was a 2004 VTX1300c... Cops are cornerworkers giving me the meatball in turn cause that cylinder to.. Post soon about oiling your air filter is bone dry and hasnt oiled... And more - Doesn & # x27 ; t ride the bike, look for cam that... You carb is starved of fuel it will cause sputtering because it is * *... To install, start the bike started, and you dont have to pull it out try..., if the fuel system mechanical engineer and have been able to restore over a dozen rides or belt a! One probe in each end of the bike filters usually arent expensive so changing that out shouldnt much... Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and.! Gear and not miss a beat much fuel is getting through were causing drag replaced... It and I can & # x27 ; s pretty annoying normal and good... Air/Fuel mixture choke provides extra fuel to the mechanic and have fuel system mechanical engineer and.... Vent line cause that cylinder to misfire runs happier or stall for.. Remove the airbox and ensure all four slides are operating together when purchase! Simply for the spark plug and examine it for problems carefully weird fueling down low! 45 mph in 5th gear and not miss a beat of sputtering goes away and the engine spools up takes... Thinking I was to check and clean the fuel starvation at this,., since I back off the throttle when it & # x27 ; t ride bike... Bike started, and you dont have to pull it out for tuning at least once a month working.
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