Mercruiser Alpha 1 tilt trim will raise up by itself?

legasea2009

Recruit
Joined
Apr 27, 2009
Messages
3
I have a 1975 165 hp 6 cly. alpha 1 outdrive that the tilt trim keeps coming up by itself on while the engine is running and in the water. I don't hear the trim motor running at all when this happens. Can anyone tell me why it would do that? Thanks for any help! Ray
 

QC

Supreme Mariner
Joined
Mar 22, 2005
Messages
22,783
Re: Mercruiser Alpha 1 tilt trim will raise up by itself?

Only in reverse?
 

legasea2009

Recruit
Joined
Apr 27, 2009
Messages
3
Re: Mercruiser Alpha 1 tilt trim will raise up by itself?

In neutral and reverse and may be foward if I'm going slow enough.
Ray legasea2009
 

Bayliner1950

Cadet
Joined
May 13, 2009
Messages
7
Re: Mercruiser Alpha 1 tilt trim will raise up by itself?

sound to me like one of two things, one you have a short in your trim switch, or two, you have bad hydrolics and the pressure is lifting the motor up, what I would do is put the motor down and see if you can pull it up any, also check and see if mabey your switches are sticking.
 
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