My check engine light is on and I had that check at autozone. The tech told me that I have a misfire on cylinder #1. I have changed wires sparkplugs all coil packs and the check engine light is still on. When the car is in park or idling at a red light it runs smooth like new, only when I get down on the gas it misfires. Also i just put in a new fuel pump and fuel filter on the car. The egr valve is new and the fuel regulator is new. I just put on a catalytic converter last march and i have only put about 8000 miles on it. I have used some fuel cleaners to clean the injectors a few times since last march but this problem just started 2 weeks ago. Also can fuel cleaner clog the catalytic converter and mabe cause a misfire? Please help and thank you for your time.
Mar 28, 2008 at 12:54 AM