On Friday, 11/12, I had a misfire on cyl 4, 5 & 6. My husband replaced the plugs & wires to those cylinders. That cleared up cyl 6 misfire. We replaced the Ignition Coil. It didn't help, still misfiring on cyl 4 & 5. Replaced the plugs & wires a 2nd time.Still didn't help. Replaced the fuel...