trim trouble

dominator 41

Recruit
Joined
Jun 26, 2011
Messages
2
I have a 1976 mercuiser 165hp. when I push the trim switch to raise the outdrive, it raises but qickly bleeds off. I talked to the previous owner and he said to replace the four o rings on the bottom of the pump. I did that and it still does the same thing. the resevior is topped off. any help would be great, thanks
 

Pete104

Lieutenant
Joined
Apr 30, 2011
Messages
1,439
Re: trim trouble

Does it drop down sitting still or while underway in the water?
 
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