First tune up ever 3 weeks ago. New plugs, wires, cap, rotor. 3 days layer, engine light popped on and car was shaking. Codes read cylinder 6 misfire and EGR valve. Wire in cylinder 5 was bad, not 6. Wire and plug in 5 replaced again, EGR valve cleaned. A week later, light starts blinking and misfiring. Light goes solid then. Driving below 40 is hard. Back into shop. Cylinder 3 misfire. Plugs and wires replaced again, cap and rotor replaced again. Nothing. Needed car for work, so drove home. This was Tuesday. By Friday, no engine light, no misfire, nothing. Friday night, back to misfire, dropped car off for mechanic to look at. Got a call nxt mornigng all the sudden now I had a fuel injector leaking fuel everywhere! Never had ANY issues before the tune up. New fuel injector and leaking stopped. Still misfired. Cylinder 3 compression slightly higher than others, so engine and parts were decarbonized. Still misfiring in cylinder 3! All plugs wires cap and rotor replaced again. Still misfiring under 40mph. Mechanic had no idea what it could be. Then suggested it was electrical and to go to Mazda. I had not one of these problems before I brought it in for a tune up. What did they do to my car and how can I fix it? I cant keep driving while misfiring. Not only do I have a 3 year old in the car, but I dnt want to destroy my catalatic converter or crack anything. I need my car to make it at least another year or 2. HELP!
Thursday, September 6th, 2012 AT 4:50 AM