2002 Mercury Bigfoot 50hp 4 stroke

ctom54

Recruit
Joined
Jul 28, 2015
Messages
1
Stalls on acceleration with a rough idol. I have change gas tanks, fuel filter and fuel line and spark plugs. Tried seafoam in gas and am using a higher octane fuel but still no change. Any suggestions welcome!
 

ERock82

Petty Officer 1st Class
Joined
Aug 14, 2014
Messages
230
Maybe you're running too lean or rich on the carb. Plugs could be fouling out as you get up and go. Adjust the fuel air mixture screw on carb and inspect plugs for being rich. Make sure your not misfiring on any one cylinder.
 
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