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-   -   backfiring through the carburetor??? (https://www.offshoreonly.com/forums/general-q/260697-backfiring-through-carburetor.html)

FIXX 08-23-2011 08:30 PM
fixx
 
Originally Posted by AllWaysThinking (Post 3486925)
Ok I just got around to doing a compression test all the cyl where 121 but one and it was 121.. I am guessing that it's low for a 508 so it looks like it need rings!! Would low compression be making it pop?
the compression is low because its a blower motor..did you test with the throttle blades open? also like friff said,valve no seating,roken valve spring,mushroomed valve...did you get the motor warm first?

AllWaysThinking 08-23-2011 08:54 PM
sorry one was 126.....motor wasn't warm and throttle blades where not open... I had to take the exhaust off to remove the valve cover so I would have to reinstall the exhaust to run it.


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