I can't answer that question for you. All I know is I redid all the seals in my m44 other than the head gasket and when I started it for the first time after all that work, the motor had some serious suction at the filler cap and I was blowing smoke big time. I ended up rigging the PCV the way I described to you and ran it for about 100 miles. The smoke went away and then I installed a new PCV and the motor is running great now. I think that the PCV or rather the CVV as BMW calls it is a bit different on our 4 cylinder motors than the 6 or 8 cylinders. I figure the concept is the same, but the valves are definitely different and I don't think that the 4 banger is known to have bad CVVs or that they can draw air in from the rear main seal like the M62s do when the valves go bad. |