No power under load

Falco198

Cadet
Joined
Jul 17, 2016
Messages
26
Hey guys I have a 83 mercury 50hp great compression new plugs wires are good 2 separate fuel cans and lines carbs cleaned new fuel filter all new ignition system and stator problem is while running under load engine has no power what so ever 8 knots at best then every so often engine comes to like and runs great for a while then drops again timing was also brought back to factory specs as well last year any ideas what's happening
 
Top