awhile back my car would go through ignition coils like the were candy. and i would also misfire horribly. so after we kept replacing coils, we decided to try to fix the problems. we changed the timing chain and gear, the magnet on the camshaft, got a new crankshaft sensor, cleaned the oilpan, and after all that it won't fire. we get absolutley no fire to the ignition coils. help?