Backfire/Spitting out of carbs

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09 Apr 2015 17:48 #667331 by KzChop82
Backfire/Spitting out of carbs was created by KzChop82
What can cause spitting out of the carbs?

Clinton, NJ
Custom chopper, 1982 KZ 1000 M2 CSR engine, K&N Pod Filters

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09 Apr 2015 19:02 #667344 by Patton
Replied by Patton on topic Backfire/Spitting out of carbs
Here are two possibilities.

Insufficient valve clearance, especially the intake valve.

Incorrect ignition timing, or sticking advancer.

Good Fortune! :)

1973 Z1
KZ900 LTD

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10 Apr 2015 08:01 #667398 by baldy110
Replied by baldy110 on topic Backfire/Spitting out of carbs
It can also be caused by the carbs jetted lean.

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  • SWest
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  • 10 22 2014
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10 Apr 2015 08:17 #667399 by SWest
Replied by SWest on topic Backfire/Spitting out of carbs
My money would be on lean. Is it any better with the choke? Timing could be one tooth off being you just put it back together. I (assume) you got the valves to spec? With those pipes, it would be lean anyway, new valves and higher compression would change things.
Steve

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