PCV System.

buruyu · Post by **buruyu** » 05 Oct 2010, 21:17

Hi !! I have a volvo xc70 1998, when I start the engine white smoke comes out just for a few moments.Is it possible that the pcv system is not working properly?
If this is the cause, where is the pcv system located?
I also feel the car running heavy when I acelerate.
Please help me out with this.
thanks a lot
Hugo

twncty · Post by **twncty** » 06 Oct 2010, 07:25

Symptoms of a plugged PCV include oil: escaping through the top of the engine (oil filler cap), smoke from the dip stick when removed while engine running and smoke out the tail pipe. With a plugged PCV the crank case builds too much pressure and sends oil and pressure out wherever it can. It is a maintenance item that few people know about. I just replaced mine in my 1999 V70 XC. The parts were inexpensive that I bought separately on EBAY. The total cost was about $70.00 which included a new intake gasket. There is a great tutorial on this site although there are slight variations between models.

As far as running heavy? Do you mean loud? hesitation? Poor fuel economy? or other?

twncty · Post by **twncty** » 06 Oct 2010, 07:28

Should have told you where it is located. Under the intake manifold on the right side of the engine. It's a black plastic box approx 4"X6". 2 rubber hoses connect from the top, one on the left side and one behind the you will not be able to see.

twncty · Post by **twncty** » 06 Oct 2010, 07:46

Should have told you where it is located. Under the intake manifold on the right side of the engine. It's a black plastic box approx 4"X4". 2 rubber hoses connect from the top, one on the left side and one behind the you will not be able to see.