The Stovebolt Site Forums The Shop Area Engine Shop motor smokes, good compression, rebuild head

There are eight ways that I can think of that oil can reach the combutstion chamber from the crankcase. In no particular order-

1. Through a broken or porous diaphragm in the vaccum booster of the fuel pump.

2. Through a defective mechanical, vaccum type crank case ventilator

3. through a ventilating tube connecting valve chamber covers to the air cleaner.

4. Through a leak past the head gasket, seperating an internal oil passage and a cylinder at the top of the block.

5. Through the valve guides.

6. Through a leak past the intake manifold gasket where the manifold covers the tappet chamber.

7. Past the pistons and piston rings.

8. (I don't think you have this, but just incase) Through leakage around the seals of mechanical superchargers or turbochargers.

Being as how you're so lucky, not all of these occur in any one engine.

You can test most of what you need without taking the engine down for an enternal examination.

You can easily check- 1. 2. 3. 4. 5. 6. and 8.

If you would like me to take you through each test please let me know. I will gladly help. Each test will give you a postive out come as to if it is where the problem is.