How To Renew Cylinder Head Gasket Sealing Surface ...
Feb 26, 2013· Unevenness or warp in the gasket sealing surface of a cylinder head may cause vacuum or pressure leaks in the combustion chamber. If left unchecked, cylinder head distortion may result in less than optimum engine performance and visible symptoms including oil leaks around the head area and possible blowout of the head gasket material.