[tobqluu]

Hello, wonder if anybody could point me in the right direction.
The trim gauge needle is all the way up and stay in the up position. The trailer up/down work fine. The trim button only work on the down position but not the up position. I open the trim button and put a meter to it have
12V on the down but no voltage at all on the up position and seem that its cut or wire is broken somewhere.
its a 1994 Mariah Talari Z200.

Thanks!

[SEMIJim]

Usually, not always, but usually, trim up not working, when trim down and trailering do work indicates a bad trim sensor. You see: You're not supposed to operate the engine, much less the outdrive, with the outdrive above about 50%. That's why trim up stops at that point. If the trim sensor doesn't work, there's no way to tell if the drive has reached maximum operating trim up, so the trim up button won't work.

Make sense?

Jim

[Jimh23]

Most likely it is the starboard trim sensor causing the problem. Probably the wire(s) to it are disconnected.

[guyjusthere]

Where are the trim sensors? Can you be more specific, because I have this same issue

[mikeyt]

Originally Posted by guyjusthere

Where are the trim sensors? Can you be more specific, because I have this same issue

Check this link at "How Do I..." for instructions & pics. This is a really common problem with Merc outdrives & if adjustment does not work, then replacement is your other option but that means the outdrive has to be removed. Most people just live with the problem.

[Oregondunes]

had a similar problem last time out, replaced the sensor and all is well again.

[guyjusthere]

That looks like a PITA to change. You have to take off a bunch of things to unscrew it!! arg. Live without.

Anyways I am dealing with a larger issue of the oil being overfilled andl smelling like fuel (also looks like dark choc milk) & my engine running rich (black spark plugs). So, I'm bummed all around.

[Dredd]

Dark and milky or just dark? Really dark indicates gas in the oil. Milky indicates water.
It sounds like it is running so rich that it is getting gas in the oil. My Mariah did this, I rebuilt the carb and all was well.

[PlumLazy]

Originally Posted by guyjusthere

That looks like a PITA to change. You have to take off a bunch of things to unscrew it!! arg. Live without.

Anyways I am dealing with a larger issue of the oil being overfilled andl smelling like fuel (also looks like dark choc milk) & my engine running rich (black spark plugs). So, I'm bummed all around.

Don't run the engine at all until you find out what's filling your crankcase... You may have already damaged your engine. Sometimes a mechanical fuel pump failure can fill the crankcase with gas... Or as dredd mentioned, the carburetor can cause it especially if you have a bad float-bowl needle and seat allowing it to overfill the carb and spill into the intake.