1997 Hyundai Elantra mileage: 115,000. Ok my Hyundai Elantra was not treated as well as it should have been. I believe the one of the cylinder piston skirts cracked. It was time for a new engine. My mates and I pulled out the old one. Placed in a reconditioned engine. Much better. But. Initially the timing was retarded too far and therefore the engine backfired. I drove about 100 mikes with the engine like this. I got my hands on a timing light and was just about to tune it when the CHECK ENGINE light came on. My manual says that this indicates a problem with the exhaust system. I cannot detect any such problem and the engine appears to be working perfectly (Once I fixed the timing). What do I need to fix? Did the backfiring just fry some environmental circuit? I have heard third hand of an Excel having the same light turn on, nothing wrong with it. Kept on going for years. Any help would be appreciated.
Tuesday, November 9th, 2010 AT 12:15 AM