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My bike keeps revving on its own when I start it? Do you know what could be causing this to happen

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Problems with suddenly full revving when bike are in neutral

Need to know what make, model, year the bike is but sounds like an AIC problem and if you have an AIC equipped engine and the wire is broken or a connection is loose and it connects then disconnects the circuit this would cause the huge rpm increase.

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Spark Plugs Fouling

this might b out of price range but new carbs and electronic ignition will still have to tune also, or get the carbs ultrasonic cleaned then set up to factory specs will be a good starting point

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most likely spun a rod bearing if the oil ran low..the oil amount is very small and leaks are deadly for small looking for another engine if youre gonna keep the bike..sorry the truth hurts abit..mine was a 76 honda 200 and a 79 kawasaki .. traded the 750 for a flatbed trailer I used behind my suburban for years..

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i would look to see if it is like efi on a car there must be a way to pull codes from the computer on it

Jul 25, 2012 | Cars & Trucks

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The spark plugs on my 2007 buell xb9r keep carbonizing and my bike does not start when this happens. What can I do to keep this from happening?

Plug fouling is a common issue when the bike is started and turned off before reaching operating temperature. This often happens when people start the bike to hear the exhaust and then turn it off after revving it a few times. The easy solution is to ride more. Never start the bike unless you are actually going to ride it, and avoid short trips which do not allow the bike to warm up and recharge the battery.

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Over-revving in 5th at 75mph all of a sudden

If the car rev'd up but did not speed up at the same time the clutch is starting to slip. Check the adjustment and recheck driving. When the clutch starts to wear this is how they act, only most people ignore whats happening and keep driving till adjustments won't fix it and the clutch has to be replaced. Have adjustment checked and keep an eye on it and hopefullty you won't need a clutch yet.

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hi mate on the carb there will be a screw get a cross head screw driver and turn this screw in a 1/4 of turns this is the idle screw which should bring the revs up a tad remember its the screw that is sticking out good luck

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hi mate change the airfilter black smoke is a sign of a dirty air filter

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Wont start.

Hi, Sounds like a sticky float valve in one or more of the carbs. When sitting, the carb overfills causing the revving when you start it, then it dies cause the carb isn't filling. Also check the exup valve in the intake, it could also cause the exact same symptoms but because of too much back pressure once it starts. Good Luck to you, hope this helps Fixya!

Mar 24, 2009 | 1992 Yamaha FZR 600

1 Answer

1982 suzuki gsx 250 not revving over 5000rpm

usually when surging like that happens there is a vacuum leak where the carbs are attached to the heads check the rubber rings that hold the carbs on to see if they are cracked if so then replace them and that should solve your problem

Jan 12, 2009 | 1983 Suzuki Rg 250 Gamma

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