My wifes Mitsubishi Galant threw a code for the TPS a couple weeks ago. A few days later it wouldnt start at all. I replaced the TPS and the car still wont start. I pulled the plugs yesterday and found alot of oil in all the spark plug wells. If I try to start the car, it stumbles like its going to start and then nothing. I figure it needs a new valve cover gasket, but do you guys think that would have anything to do with it not starting?