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0MC 140 sterndrive

Honda_82

New member
Hi I was wondering if any one might be able to help me ? I bought my boyfriend a used old 1979 seaswirl OMC 140 we had to fix core plugs witch is done and completed we have took it out 2 twice and both times it starts right up but only goes like 5 miles a hours he said that's all it will go so question is it goes 5miles a hour ? If not anyone have a idea what needs done next thank you
 
Do you have a sister ???-------------I would say you start with a compression test.-------And look into a tune-up.----Could be the carburetor flooding.------Could be a bad sparkplug.----Timing off.----Perhaps post a video of it running when going 5 MPH.
 
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