1992 Yamaha FZR 600 Logo
Posted on Apr 09, 2010
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Bike wont idol below 2 grand

Ok i own a 1992 or a 93 im not sure but it is a genisis.my problem is the idol.i cant get it to idol unless its above 2,000 rpms as soon as it drops below 2,000 rpms it goes straight to 950 to 1000 and starts to shut down but if i rev the engine with the throttle its sputters a lil then comes back to life only to die down again until eventually it shuts off..ive adjust the pin screw to get the idol above 2,000 but i dont want to keep it there .its too high.would spark plugs be the problem?

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  • Posted on Apr 09, 2010
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Hi and welcome to FixYa,

Almost always, the described idling problem would be a carb issue. The carbs set has to be pulled down, fully dis-assembled, all non-rubber parts soaked in carb cleaner and cleaning be done specially on the jets and pin holes.

In some instances high idle could be caused by a vacuum leak in any of the rubber coupling between the carbs and the intake manifolds.

Good luck and thank you for asking FixYa.

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OK, there should be a warmed up idle adjustment on this bike on the carbs under the tank (like my 1985 Honda Interceptor). Maybe it's set too high. On my bike the screw has a knob on it for easy adjustment.

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But, if they don't, then a screwdriver should be enough to turn the idle adjustment screw.

Also, check for kinked cables for the throttle.

Happy biking!
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You should have the bike tuned by a professional who should include synchronising the carbs, this will let the engine run more smoothly, idle at lower revs ,increase speed & all-round performance speed

Ride safe
Bike-Doc
Please mark this as very helpful (if it has been!!)
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1992 FZR 600

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I have a pocket bike that wont start unless u put gas where the spark plug is and then it will run&idle but once u give it throttle it dies there is no high or low screw there 1 screw &the idle screw

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