1977 55hp evinrude running rough

pkrainert

Petty Officer 2nd Class
Joined
Jul 27, 2008
Messages
196
My 77 rude is running a little rough latley. What should I do to fix the problem? I am considering rebuilding the carb, changing the spark plugs and lower unit oil while im at it. What else should I look into? Should I do a de-carb with some seafoam?

Also it seems a bit louder than most other motors I have seen around here that are around the same age and size. what would cause this?
 
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