omc cobra trim won't stay up

jfortier97

Recruit
Joined
Aug 18, 2010
Messages
1
I have a 1986 sea sprite with a 4.3 omc cobra that won't stay trimed up. The trim motor works normally up and down but after triming up it lowers its self in about one minute to the lowest position on its own. Could it be the pistons or should I look somewhere else? And no I don't see any external leaks.
 

zbnutcase

Commander
Joined
Sep 19, 2009
Messages
2,055
Re: omc cobra trim won't stay up

Most likely in the trim pump valving as fast as it leaks down.
 
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