240z Engine Smokes

[DeesZ]

Did it smoke before you changed the oil? I ask because I had this happen to me back in the '70s. I was running Castrol GTX 20-50, then in the winter switched to 10-30. I had a cloud within several minutes that went away only after going back to 20-50. So, this suggestion boils down to 'what was in there?' and 'what did you replace it with?' If you are lucky, it may be that simple. I'd eliminate this before I put a wrench to the car, anyway. Just a thought based on experience.

[carguyinok]

How long has the car been sitting without being run? Days, months, or years? I have found that you can tell alot just from smelling the smoke. If it's on the sweet side it's coolant. Also, have you had too add coolant or oil since the smoke started?

[lm71z]

What oil did you use?

When you pull the plugs what condition are they in? They can help pinpoint the problem.

The old spark plugs were brown when I pulled them. What does that mean?