(1973)Mercury 650-65 HP O/B Fuel Prob

Granville

Recruit
Joined
Aug 20, 2002
Messages
1
Ive bought my First Boat this summer ..The Boat i bought had less than 10 hours on the motor , soo of course im working out the buggs , My Prob is , I cant Keep Fuel pressure during a full throttle , nose diving the boat after just a few hundred feet of this full throttle,Having to have a passenger pump the bulb,But at 1/4 throttle runs fine. Anyways , Ive replaced the Fuel line/Bulb , New gas tank , new hoses on the motor,rebuilt the fuel pump , now im dumbfounded , any other Ideas ?
 

rickdb1boat

Supreme Mariner
Joined
Jan 23, 2002
Messages
11,195
Re: (1973)Mercury 650-65 HP O/B Fuel Prob

Try a Carb rebuild. Floats may be stuck or other crud in the Carb Jets!
 
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