I just replaced the valve gasket off cuz it was leaking oil and somehow the spark plugs won't fire. I can get the car to make that noise like its very hard to start, but it won't start. oh yeah I also replaced the starter, but it started fine afterward. I don't think its the starter, but maybe the distributor or the wires since I also bought new spark plugs. Anyway this is for my dad's Hyundai Sonata. cheap car....