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Discussion Starter · #1 ·
Idle set correctly. Engine idles fine, but when blipping throttle, engine revs out of control. Carbs have just been recently rebuilt. Ideas?
 

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Check your throttle cable routing.
 

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Discussion Starter · #3 ·
Check your throttle cable routing.
That’s a good point. The routing is ok. The cable needs to be lubed also but it has push/pull cables and I can see the throttle snap back ok on the carb. Blipping is ok until mid revs and then races away.
 

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1978 CX500 "The Grub", 1983 GL650I "Nimbus"
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It sounds like the vacuum piston is floating. Have you made any non-stock mods that might affect the carbs? Pod filters, maybe?
 
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