How To Replace A Volvo PCV & Oil Filter Housing - P1 Volvo XC70, S40, C70 & More
The PCV system is a universal concert for all engines. While under load, pressure can build up in the oil pan and crankcase, where there shouldn’t be any pressure. It’s the PCV’s job to open up and allow the engine to pull this pressure up through the manifold and into the combustion chamber....
