2004 Subaru Impreza Misfire

2004 SUBARU IMPREZA
156,000 MILES • 2.0L • 4 CYL • TURBO • AWD • MANUAL
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FISHMAN83
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  • 1 POST
When accelerating through the gears on freeway 5th gear lost power and struggled to maintain 80 mph. Check engine light started blinking. I took it to auto zone and they said it was a misfire in cylinder 1 and 4. I replaced all spark plugs and coil packs replaced fuel filter and cleaned the maf sensor. Took it back in to autozone now I have a misfire in all cylinders. Engine shakes while idling. Not sure what else I can do. Any suggestions?
Nov 18, 2015 at 3:41 PM
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HMAC300
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misfires are best left to pros to handle as they can be sensors, stuff you replaced , injectors or basic engine problems. check your fuel pressure with a gauge that might be it and make sure your wires are hooked up correctly that you replaced. fp should be 41-46 psi 41 minimum at idle.
Nov 19, 2015 at 6:23 AM