1989/1990 Mercury Black Max 150

[philipjames5k5]

I recently bought a new bass boat (1988 tracker fs) with this engine. The engine checked out all the known ways to check it.
Compression
110
105
107
105
110
107

Pees well, clean motor, tilt and trim works great, spark on all cylinders, shifts well with clean fluid.

My questions are

Are these motors good? Any commonly known issues with these motors?

Is the oil pump on this motor reliable, or should I disconnect it? Ive had good luck with the VRO system.

 

[Barnacle_Bill]

Re: 1989/1990 Mercury Black Max 150

Like any outboard it all boils down to how well it has been taken care of by previous owner(s).

 

[Dukedog]

Re: 1989/1990 Mercury Black Max 150

Tha oiler is a crap shoot. They are just fine "IF" its been taken care of and "NEVER" over heated. That's tha number one killer of tha oiler gear givin' up..........