Cadillac Owners Forum banner
carbon build up
1-1 of 1 Results
  1. 2014-2019 CTS General Discussion
    just had an ignition coil go on the car at 91,xxx miles and noticed the front of the engine has a a lot of build up on it. Curious opinion and feedback if someone thinks I have a problem and should start searching the engine.
1-1 of 1 Results