Posted by chris case on Monday, August 02, 2004 at 10:32PM :
In Reply to: Oil breather, leaking posted by Mark Toper on Monday, August 02, 2004 at 9:40PM :
It's usually in the pipe that goes from below carb to under rear of exhaust manifold. If you don't have that plumbing, you should have a 'road-draft tube' in the same location- right rear side of block. It is about 1 1/2inch dia. extends down below crank level. The vent system should prevent pressure build up. If the engine builds up pressure it will blow oil out of several places- vent cap, or seals, or past valve guides. Service your crank vent system- clean/replace pcv valve, or check road draft tube for wasp nest, mouse home,heap o crud, etc. If still blowing oil out where it should suck clean air in, maybe time for valve guides or rings. Have Fun!