ryanwilson277
Cadet
- Joined
- Mar 30, 2017
- Messages
- 20
I have a 1997 5.7 mercruiser. I know I have a manifold or riser that's plugged up with rust because one of the risers was getting hot when I ran the boat and I am getting just enough water in the oil to milk it up but not raise the oil level. I pressure tested the cooling system by plugging the hose from the outdrive and one of the manifold hoses and put my gauge and shrader valve on the other manifold hose. I pressurized to 15 psi and only lost 1/2psi in an hour and a half. My question is, how might I find this leak? It's too small of a leak to hear any air