Posts Tagged: bent valve

Fix Misfire problems

Fix Misfire problems Many misfire problems are caused by worn spark plugs, leaking spark plug wires, or bad ignition coils. So you should always start your diagnosis with the basics. In this case, it’s probably easier and cheaper to replace the plugs and wires since they’re cheap and you’ll have to remove those parts to check them. If your vehicle has multiple coil packs or coil-on-plug (COP) coils, switch them around to see if the misfire code moves with the switch. If so, you’ve nailed the problem. If you have distributor … Read More