tuandabrainz
Member
"Guys,
This is a weird
"Guys,
This is a weird problem that I really need help with. This engine is a 1979 that I have replaced all of the gaskets and seal on except the front oil seal and the timing chain cover gasket. When I run the engine, anywhere from idle to 3500 rpm, the machine runs as smooth as silk, with no issues. When I run at 4000 rpm, I get oil all over the top of the engine. At first, I thought it was being sucked out at the breather opening of the valve cover and being spit out where the hose connects to the flame arrester. I installed a PCV valve here, and got the same thing. I cannot watch to see exactly where the oil is coming from, because I am in the boat alone and can't leave the wheel to watch the engine, and I with muffs, it runs fine because I can't rev up that high without damaging the stern drive water pump impeller. As I said, all the other seals and gaskets are new, the compression reads about 140 on all six cylinders,and if it were a bad gasket or seal, it should leak at idle or at 3500 rpm. The next step is to take off the outdrive and run water directly to the engine so that I can test it at 4000 to see if it vents and where it is coming from, but before I do, has anyone seen a problem similar to this? Its really driving me crazy."
This is a weird
"Guys,
This is a weird problem that I really need help with. This engine is a 1979 that I have replaced all of the gaskets and seal on except the front oil seal and the timing chain cover gasket. When I run the engine, anywhere from idle to 3500 rpm, the machine runs as smooth as silk, with no issues. When I run at 4000 rpm, I get oil all over the top of the engine. At first, I thought it was being sucked out at the breather opening of the valve cover and being spit out where the hose connects to the flame arrester. I installed a PCV valve here, and got the same thing. I cannot watch to see exactly where the oil is coming from, because I am in the boat alone and can't leave the wheel to watch the engine, and I with muffs, it runs fine because I can't rev up that high without damaging the stern drive water pump impeller. As I said, all the other seals and gaskets are new, the compression reads about 140 on all six cylinders,and if it were a bad gasket or seal, it should leak at idle or at 3500 rpm. The next step is to take off the outdrive and run water directly to the engine so that I can test it at 4000 to see if it vents and where it is coming from, but before I do, has anyone seen a problem similar to this? Its really driving me crazy."