How do you do a pressure test of lower unit

[Stingray1961]

I have a 1993 4.3 how to you do a pressure - vacum test. Specifically what hole, the drain plug

 

[starsnstripers]

Re: How do you do a pressure test of lower unit

Specifically, what drive do you have?

 

[starsnstripers]

Re: How do you do a pressure test of lower unit

Also if you go to the stickys "adults only" section on this outdrive section at the top of this forum you can get your specific manual that tells you everything, including pressure testing.

 

[Stingray1961]

Re: How do you do a pressure test of lower unit

Mercruiser alpha 2 4.3lx

 

[backyard mechanic]

Re: How do you do a pressure test of lower unit

Pressure and vacuum testing requires a tool to do so. It doesn't matter which hole you put the tester in. If your upper and lower units are separate like on an old outdrive do them both separately.