Here is the situation. My Concorde engine bay look horrible at the moment. There dirt, greases, grimes and....baked-on clear coat. The clear coat is actually on the engine cover (please, correct me if I'm wrong on the term). My dad decided to detail the engine bay with my uncle when he first got the car home from the dealership, and after done cleaning my uncle used some sort of spray on clear coat enamel. Fast forward 6 years later, the engine bay is covered in a yellowish flaking film. I tried to clean them with some degreaser, soap and water with an added bonus of a lot of hand scrubbing. All in vain as the baked clear coat are stuck in the tiny textures of the engine cover. If you guys can give some tips or advice on how to clean up the baked clear coat, it would be much appreciated. I'll try to get some pics up as soon as possible. Thanks in advance to all that reply.