Handlebar shakes or excessively vibrates: Handling and/or Stability Unsatisfactory: O-ring at the oil pipe in the crankcase damaged Neutral positioning pin spring weak or brokenĭrive shaft, output shaft, and/or gear splines wornĬonnecting rod small end clearance excessiveĬonnecting rod big end clearance excessiveĮxhaust pipe leaking at cylinder head connectionĬlutch housing/friction plate clearance excessiveīracket, nut, bolt, etc. Valve not seating properly (valve bent, worn, or carbon accumulation on the seating surface.)įuel level in carburetor float bowl too lowĭoesn’t go into gear shift pedal doesn’t return:
Spark plug cap shorted or not in good contactīleed holes of air bleed pipe or needle jet cloggedĬylinder head not.sufficiently tightened down Piston ring bad (worn, weak, broken, or sticking) Spark Plug cap shorted or not in good contactĪir cleaner clogged, poorly sealed, or missingįuel level in carburetor float bowl too high or too low Valve not seating properly (valve bent, worn, or carbon accumulation on the seating surface) Piston ring bad (worn, weak broken, or sticking) Neutral, starter lockout, or side stand switch troubleĬylinder head not sufficiently tightened down Spark plug cap or high tension wiring trouble (When flooded, crank the engine with the throttle fully open to allow more air to reach the engine.) Starter motor rotating but engine doesn’t turn over:įuel level in carburetor float bowl too high Starter lockout or neutral switch trouble Also check out the Spark Plug Troubleshooting guide from our friends at NGK.Įngine Doesn’t Start, Starting Difficulty: We’re located in Franklin, TN, and we’ll get to the bottom of your engine performance issues.While this Motorcycle Troubleshooting Guide is not a complete guide of every possible cause for each problem listed, it will help assist mechanics in troubleshooting some of the most common difficulties they will face. The improper fuel/air mixture can also cause avoidable engine damage.Ĭall AutoFix if you suspect you have carburetor trouble. A failing carburetor directly affects your vehicle’s fuel efficiency, so you’ll find yourself spending your hard-earned cash at the gas pump more often. It’s important to take your vehicle to an auto service shop at the first sign of the above four signs. If you can’t start your car in either situation, it could be your carburetor. For the most part, a tune-up is as simple as: washing down the machine, changing the spark plug, oil, fuel filter and air filter, and giving the carburetor a. In most cases, the vehicle will be impossible to start when cold but might start easier when warm because the battery has charged during operation. Of course, difficulty starting an automobile can also be a sign of a dying battery or starter. If you have trouble starting your car, truck or SUV, your fuel/air mixture could be off. It should be noted, however, than a rich mixture can also cause backfires. An overworking engine will overheat and an engine filled with too much air will backfire. Performance suffers when the vehicle’s engine is starved of fuel and it must work harder to maintain speed. The opposite of a rich fuel mixture is a lean one and this can cause your engine to backfire or overheat. As you can imagine, this rich mixture burns excess fuel which is why you get fewer miles to the gallon. This means the carburetor is using too much fuel in the fuel/air mixture. Black smoke, whether steady or just when you accelerate indicates a rich fuel mixture. You shouldn’t see black smoke coming out of your exhaust pipe even if you drive a diesel.
You may also notice your vehicle isn’t getting the gas mileage it used to. Signs you have trouble brewing within your carburetor include sluggish acceleration and reduced engine power. The air and gas mixture must be just so in order for you to get maximum performance out of your car, truck or SUV. Engine Performance ReductionĪs mentioned above, combustion starts and keeps your engine running. AutoFix can look for carburetor trouble, and if you experience any of the following four signs, you should definitely have your carburetor checked out. It then regulates that mixture to keep the engine running smoothly. It creates combustion by mixing air and gasoline to start the engine. Your vehicle’s carburetor has a few important functions.
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