Engine Performance problem
2004 Chevy Cavalier 4 cyl Front Wheel Drive Automatic 60000 miles
went to start car, engine wouldn't fire, possibly flooded. Changed spark plugs, old ones were black. Got multiple cylinder misfire code, car runs no better after changing spark plugs. Smelled gas in oil, confirmed flooding probably, still has flashing check engine light, with no power on accelleation. Suspect weak ignition coil. Help!