Mariner 30E 689- still will not run at WOT

DADDYRABBIT1

Seaman Apprentice
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Dec 16, 2008
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mid 80's Mariner 30E 689-

new plugs, new fuel pump, rebuilt and cleaned carb, new fuel tank and lines, still bogged down at WOT, took to repair shop they said the carb just needed to be cleaned again, said they checked all electrical, compresssion and timing all good.

but still same problem, bump the key it starts and idles fine, throttle up and it just boggs down, like it is dropping a cylinder. I have checked for spark and have it on both cylinders at idle. Will an electrical component cause the motor to loose a cylinder under load?

at my whits end with this thing, any sugestions?
 
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