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1974 85hp power problem

irongut

New member
"My issues started last year a

"My issues started last year after I didn't open the vent on my plastic gas tank and it was flattend by the time I noticed. After that the engine didn't have enough power to plane the boat. I rebuilt the fuel pump, replaced the gas lines (thinking the suction stretched things). Compression 140-150 on all cylinders. The boat always started and idled fine.

This year found coil 2 not working, relaced it. All others working. I have marked improvement now, boat will plane, however it's lacking around 25% of the power it had last year?? Any idea's I can try to get it back?? Someone mentioned "high speed jets could be dirty/need adjustment" Does that fit this scenario? Thanks"
 
"re -ck spark..
clean/rebuild


"re -ck spark..
clean/rebuild carbs...very clean,..hs jets are in the bottom,must be spotless.
de-carb
ck high speed timing..
get a factory service manual to help you."
 
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