I have a '95 Johnson 130 HP outboard that had seen very little use up until I bought it about 6 mos. ago. The motor runs like a champ but there is an annoying problem with the power trim. If the motor is trimmed up, it will slowly "leak" down until it is trimmed down.
For example, if I trim the motor all the way up (while off), it will slowly (over the course of ~10 minutes) drop back to trimmed down. Also, if I trim it level while underway it slowly finds its way back to trimmed down.
I don't see this problem mentioned in the troubleshooting section of my Seloc manual. I'm wondering if this is something I could fix myself and if someone could point me in the right direction.
EDIT: I should mention that it isn't physically leaking any fluid externally. It just seems that fluid is bypassing some sort of valve or piston internally which it shouldn't be.