Friday, August 1st, 2014 AT 4:22 PM
I have knocking sounds coming from the engine that are continuous and constant. I am not sure what it is or how to fix it. We took it to a mechanic and he said he made some "valve adjustments" and charged us $350, but it's still making the noise. Any ideas on how to fix this? Would it be a good idea to buy a used engine and have someone install it for us?