The car is knocking and took it to a dealer Southtowne Newnan and was told the lash adjuster was bad. They took two weeks to repair the car and when I picked it up it sounded as bad as before.

I was then told they may need to go into the lower part of the engine. I complained and went back to the dealer. The mechanic then told me the top of the engine is not getting oil???

Have an ideas to fix