I was told by pep boys that I have a possible worn piston ring. (#5)causing low compression in the cylinder I thought a valve job would cover this which I had done about 6 months ago, but was told that the piston rings were not covered with a valve job. What is covered in a valve job. Or what is a piston ring in the cylinder? Thank you.
Tuesday, January 29th, 2013 AT 5:11 AM