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1999 bf90a ….no idle

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Old Dec 22, 2021 | 05:46 AM
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Default 1999 bf90a ….no idle

Struggling with the dreaded “no idle issue”……
Removed/cleaned/rebuilt the carbs. Used all new Honda gaskets.
Unfortunately ……still no idle …..unless the idle mix screws run way out and choked.
Removed carbs again….(groan). Noted the gaskets were all intact, not stuck to any surface anywhere.
Has anyone had any problems with Honda gaskets not sealing? Bolts and screws were torqued appropriately.

Unless gaskets didn’t seal, I don’t see any other sources for too much air. Seems there must be something still blocking fuel although everything seemed pretty clean on assembly. Inspected every little hole in jets and tubes. Have ordered an ultrasonic cleaner to really blast the carb bodies and all parts before reassembly. Hopefully that will clear any blockages.

Would you recommend using all new gaskets even if these are “basically new”? Getting quite expert at removing/reinstalling Honda carbs, but really don’t want to do this again!

Despite being over 20 years old, this motor is very clean and had been running beautifully. Any assistance in getting it squared away will be greatly appreciated. Thanks!
 
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