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P0304 Diagnostic Trouble Code Discussion for December 2004

Cylinder 4 Misfire Detected

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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2000 Ford F-150 Lariat 5.4L Misfire, MIL Lamp on VIN: 1FTPX17L4Y
P0304: Cyl 4 Misfire. KOEO the fuel pressure climbs to 30 then drops off to 0. Installed new fuel pressure regulator from Ford. No Change. Cylinder misfires on 2 and 4 doesn't change after new plugs (from dealer), Swapped injectors and coils around. The misfires sometimes happen on...
December 06, 2004
2001 Volkswagen Jetta GL 2.0L Hesitation, Stall, Misfire VIN: 3VWSH29M31
P0304: missfire cyl 4. customer complained that experienced loss of power,no take off, fuel pressure ok, no check engine light on, all filters and plugs new, unplugged maf. vehicle reved out perefectly. replaced maf with genuine part, initially vehicle exhibited the same symptoms, e...
December 06, 2004
1999 Chevrolet Tahoe LS 5.7L Misfire VIN: 1GNEK13R3X
P0304: Cylinder 4 Misfire Detected. This vehicle has been to two other shops for this complaint now we have it the plugs wires cap and rotor have been replaced previously with no change i believe that there is a problem with the fuel system a poppet valve on #4 that is partialy plugged does this...
December 14, 2004
1998 Subaru Legacy Outback 2.5L Misfire VIN: 4S3BG6853W
P0304: Cylinder 4 Misfire Detected. We have this 1998 legacy that we did a dealer short block and had the heads rebuilted.runs great ,but every once in awhile it will set codes for misfires.Not consistent with anyone cylinder.Every time it happens it will be a different cylinder or all.You can d...
December 15, 2004
1998 Honda CR-V LX 2.0L Misfire, MIL Lamp on
P0304: Cylinder 4 Misfire Detected. Honda techs, here is one with a curve. This came in after having a timing belt and tune up done about 15000 miles ago. The first thing I did was to recheck valve clearances. I had afew tight ones and yes they were exhaust. I reset clearances and tested. The mi...
December 19, 2004