Originally Posted by PYROBLADEZ
I'm not sure forgot to get the paper all he said was carbon build up he didn't really help me when I asked how to fix it
Carbon build up where would be the biggest "need to know", lol
Carbon build up on the pistons is an easy fix, you can do it with the engine running actually, but carbon build up, say, in the EGR system means you will have to remove things and start digging it out...
Quite a few of those guys that work at those places have never wrenched a car a day in their life and wouldn't be able to tell you anything anyway...unless it was to sell you car wash/wax or some other "mechanic in a bottle"...