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Author Topic: UNKNOWN CARBURETOR EVALUATION  (Read 397 times)

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Offline sharkey

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Re: UNKNOWN CARBURETOR EVALUATION
« on: September 01, 2013, 09:25:56 am »
Some of the Walbro HDA style carbs use a fine mesh screen rather than a one way nozzle as a high side (power) check valve.  On those carbs the high side needle test wont apply because the screen will pass air either way. 

Also, on the nozzle types, if you can suck air back through that check valve the check valve or nozzle will need to be replaced.
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