I changed out the spark plugs, the wires, ignition coils and the intake manifold along with doing a time up and changing of the fuel filter. My SUV is misfiring or backfiring. It has a popping misuse coming out from under the car out the muffler. I don't know what else can be wrong with it. I even changed out the catalyst converters.
Aug 28, 2015 at 8:02 PM
