Lack of Power

jolsonemt

Recruit
Joined
Jun 8, 2004
Messages
5
72 50HP Evinrude... Won't plane out boat. New fuel lines, new tank. Runs a little better with the cover off, but not near what it should be.
 

Steve135

Petty Officer 1st Class
Joined
Aug 26, 2002
Messages
394
Re: Lack of Power

Did it run better reasonly or has it been getting bad over time. Running better with the cover off makes me suspect a exhaust leak either from the lower seal,or the exhaust plate? The lack of power would be from lack of back pressure. A soapy water solution at the base of the motor would be a easy thing to try to see if its at the lower seal.Have you checked the pressure on the fuel pump? Just disconnect it and crank the engine over should be a good stream. You could also do it with a pressure gage in line as the motor runs. <br />steve
 
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