[Razorback1980]

myskyon....I hear what you are saying about the turbo seals but those are different symptoms from what I remember reading. The smoke wasn't so much under boost as first starting and at idle, plus most of the plugs looked pretty good which leads me to believe it's not the turbo. I think there are two problems. I think Jon is right about the cam tower leaking on the outside of the plugs which could probably be fixed by retorqueing the cam tower bolts. I think that is one issue....but the tip of the plug on number four looked black. Only two ways into the cylinder that I can think of without something broken...valve guide seals and through the intake valve. I can't think of a way that the cam tower can leak oil into a cylinder and the theory of it being an exhaust leak with the oil leaking back into the cylinder doesn't sound likely as the oil would have to run uphill and the air pressure is inside the header blowing the oil out of the cylinder not into it. IF and I said IF the plug is black on the tip, then there is oil or coolant inside the cylinder and the puzzling part is why only cylinder 4 which would pretty much eliminate it coming through the intake manifold or all plugs would be as black as number 4. That's what makes me think it's a head gasket (although I'm hoping I'm wrong!)...BUT I think Jon has some great advice...don't tear into it before you find the problem...do the compression and leak down test along with the coolant pressure test. Those will help you find the problem for sure.