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springer8828

High idle

9 posts in this topic

Hey guys 09 yz450f just picked it up only thing that I have noticed about is every now and then the idle will go up after I let off the throttle it will stay up for a few mins and then back down what could be the cause of this

Edited by springer8828

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Check the routing of the throttle cable.

Does it change RPM when you turn the handlebars to either side?

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It doesn't do it when I turn. How is the best way to check for a air leak? I will check the fuel air screw to thanks guy's

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Use carb clean or brake cleaner and spray the rubber boots and junctions around the card. Do this while the bike is running. If the idle spikes then you have a leak where you just sprayed. The same trick is used to look for leaky vacuum lines in cars and trucks.

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