. Take it out for tuning at least once a month. Not really, the "choke" is actually a fuel enricher, which means it just dumps gas into the carb without any means of metering, it can & will foul the plugs, pull the plugs & see if the ceramic is black or tan in color, if black, they are fouled, and need to be replaced. The screws of the engine are tightened during tuning. I don't think it is, a sport bike will never run right under 3k rpm, my Daytona stutters and jerks between 2k and 3k. Check the manifolds for cracks. Have you tried accelerating to 70 in 4th & Then shift? The carburetor of your bike is the heart of your vehicle. 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. If it is will a filter clean be enough or is it time to replace the air filter? Replaced fuel filter lately? 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. 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. See my post belowThanks!! You need to clean your spark plug. Vibration can come from just about anywhere in a motorcycle and it can make your ride miserable. 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. It seems to lose all power under load. You should only need it until the engine is warm. Now its time to fix it. It could be blocked jets, incorrect settings, or the air screw. Welcome to the cafe! 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. That makes sense What a genius this guy is gives all the information he knows on a topic. based on comments I see youre convinced its a fueling issue. What could this be? 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. Youll simply need to get a new spark plug wire. - Doesn't happen in 1st gear, only 2-6. Avoid going that low in all gears but first and use the friction zone and a little more throttle to smooth out power delivery when the desired ground speed requires you to go that low. Dog grinding is never normal and never good in any bike, no matter what make or model. The best way to diagnose a timing issue on a motorcycle is to take it in to a mechanic. Honda VTX 1300 / VTX 1800 Motorcycles Forum. Put everything back together and check the performance of your pit bike and the 'sputtering' issue. The bike intakes air through the filter and if this is restrcited it can be an issue. I put a new filter on ($35 Fing dollars !!!) Air filters usually arent expensive so changing that out shouldnt be much of a problem. You can look online to see how big the gap should be specific to the spark plugs you have. The lack of air then leads to sputtering in your motorcycle. This short video shows you better than I can explain it so take a look. Your bike will stop sputtering. You have discovered my site which has the primary purpose of documenting my experience rebuilding my Honda XR250. JavaScript is disabled. Lets hope I can complete it and get it back on the road! Less clean air means the jetting will become more rich, which can cause your dirt bike to bog. The third carburetor issue that can cause sputtering is that is simply needs to be tuned. Another easy thing to do it to check the air filter condition. Whenever I ride and switch my gears, everything seems to be fine. 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. You have a wet clutch, dont be afraid to use it. The carb is starving for fuel. Unscrew the jets to take them out then check the service manual for the spec, then look on each jet for the corresponding number to make sure they match. With the bike shut off can you push it around in gear with the clutch pulled in? Soaking the clutch plates will not do anything for you're problem. What you are describing is a part throttle lean condition. At this point, you'll see two gold screws. This can also be a cause for not enough air getting through. 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 a 10 minute commute should you ever still have it on? A misfire happens when the cylinders of your bike cannot fire. Starts fine. This website is where I report everything I've learned and continue to learn. Thanks for your time and thanks for this great forumthere is so much great information and bikes on here! Fuel Component Problems. 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. Dirty air intake filter? What Is The Best Motorcycle Seat Height For 58? I was having the same issue. Fueling issue or a blocked air filter? Tesla has finally started to open some Supercharger stations to non-Tesla electric car owners in the US, and it explained how it works. Float bowl gaskets are also generally inexpensive. I'm curious to see if you have it figured out yet. Free shipping for many products! Feb 14, 2007. If you have pod filters, examine them to make sure there isnt some sort of residue on them thats preventing air from flowing through them. This series also includes other hard-to-tackle components such as body work and electrical. my cruising rpm is 4k. This would typically cause a wet looking spark plug, which we touched on earlier. You dealer will tell you that it is *normal*. Vacuum port plugs are cheap and are easy to install. If it comes on then goes off after about 4 seconds there's no code. Normally, when you press down on the accelerator, the . As have come across this problem. Then, never use the choke (enricher) ever again and you shouldn't need to. JavaScript is disabled. Bike stutters in low RPMs in all gears. link to Can A Loose Motorcycle Chain Cause Vibration. Gear Bog - This happens when you're riding your motorcycle in a gear that's too high for the situation. This is also happening in other gears when I roll into the throttle. 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. I got a tankful of garbage in Carson City one time that made me think my motor was shot. The push rod is straight when rolled on glass or against a straight edge? My rancher got stuck in 2nd gear today. 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. Only thing I recently did was change my tires. Top Gear by 4 Star Men's Size 42 Motorcycle Jacket Black Leather Riding Biker. Sep 13, 2009. These days, most bikes come standard with what's called a side stand safety . But jokes aside, my little CBR also stutters under 2/3000 rpm. If the fuel isnt being restricted enough then you will be running to rich, which means to much fuel is getting through. vtxcafe.com is an independent Honda enthusiast website owned and operated by VerticalScope Inc. "I was too drunk to walk home so I drove. Is the end of the plug excessively wet or dry. It may sound very basic but worth checking and a logical place to start. I haven't had the problem since and just turned over 83,000 miles while headed to the Eureka Springs M&G. As the dealers say. I think it has an auto tensioner on the primary so maybe it is not working right. When you changed the plugs were 1-4 different than 2-3? Gas leaks can disrupt fuel consumption by the engine. There are several reasons why a motorcycle sputters. Poor timing advance. 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. Spark Plug Misfiring Causes the Engine to Stammer, Gasp. For example, carburetor issues can lead to ignition problems, performance problems where power output is too low, and a cracked engine block. Obviously have a container on hand to catch the fuel. 1. . A forum community dedicated to Kawasaki Motorcycle owners and enthusiasts. Most people would use a bolt on the cylinder head. 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. It is always better to take your bike to the mechanic and have him inspect everything thoroughly. I'm not sure if this means I should turn the bike on cold and increase the idler, or anything else. It coughs and sputters, new, no leaks, 2014 - Answered by a verified Motorcycle Mechanic We use cookies to give you the best possible experience on our website. Protecting bike from drops while practicing low speed drills. Up until this point, the engine runs smoothly and is a fun bike to ride. The petcock has a vacuum line as well as part of the emission system. 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). It wont stall but will feel like that because it likes to be up in the rpms. - More About Neal, XR250 Front Wheel Refurb Part 2 - The Rebuild. Think of it This way, Ken Our Ponies may not be fast, but they Love to Run! I had my summer staggered rims on, now have the standard 18in winter tires. Thanks for the help. The first step we recommend is to check the efficiency of the spark plug. Getting between 38 -48 MPG. Vacuum leak on the carburetor or intake boot. 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. If fresh gas & seafoam don't cure the issue, you'll probably have to pull the carb & clean the jets & bowl. The main thing I do with the lead on its own is when you have the cap off you can check the end of the lead visually. Power created by the engine rotates a shaft, which transfers power to the rear wheel through connecting cogs. Hi, I am Neal Hendes.