mercury check valve

[halibob]

I have a 89 mercury v200 and am in the process of replacing all of the check valves in the oil injection system. I noticed on the one that comes from the crankcase to pressurize the system, it isn't completely air tight. As a matter of fact, i have twins and both crankcase check valves leak a little on the backflow. Is this normal? They are both brand new, out of the package quicksilver parts. Any help would be appreciated.

 

[gss036]

Re: mercury check valve

The check valve on the engine relieves the pressure from/on the 3 gal oil tank after shut down.

 

[halibob]

Re: mercury check valve

The check valve on the engine relieves the pressure from/on the 3 gal oil tank after shut down.

Thank you for the quick reply

 

[hkeiner]

Re: mercury check valve

There was a recent discussion (thread) on check valves that you may find helpful. It helped me out a lot. It may contain more information than you want to know about these valves. but take a look anyway.


Title of thread:

Faulty check valves on oil injection system causing smoke?

Link:

http://forums.iboats.com/bbBoard.cgi?a=viewthread;fid=29;gtid=1217900