1979 mercury V-150

by Steve
(Lexington Ky USA)

I have replaced the stator, the trigger, rectifier, both power packs and all the coils and the plug wires. The motor will start up and rev all the way up to 5500 RPMs at full throttle in neutral. when I put it in gear and take off it bogs down at 3200 to 3400 RPMs. The fuel line has been replaced new fuel filter tank taken out and cleaned pick up is clean. Fuel pump has also been rebuilt. Does anyone have any suggestions as to what else I can do. It was running good and I wasn't having any problems out of it at all and it just started doing this

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