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P0304 Diagnostic Trouble Code Discussion for April 2006

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2003 Subaru Legacy L 2.5L Misfire, MIL Lamp on VIN: 4S3BH63543
P0304: Cylinder 4 Misfire Detected. this subaru has had the head gaskets done at another shop and the customer says it has been missing at high altitudes since. we work in vail colorado and going over vail pass the altitude is 10,500 feet and is the only time the car acts up. at the top of the p...
April 03, 2006
2000 Nissan Altima GLE 2.4L Misfire VIN: 1N4DL01D0Y
P0304: Cylinder 4 Misfire Detected. This car has a repeat failure of the intake gasket on no. 4 intake port. I know this seems to be a common problem as I have done 3 of these cars for this same problem myself. This is the first one that has come back. I am sure that I got all the old gasket fro...
April 06, 2006
2004 Ford Ranger Edge 3.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR10U64
P0304: miss 4. This ranger misses @ idle & slightly above doesn't seem too miss under load and high speed. cruise emissions are good compression check static is 70 on#6 120 if you add oil to clyinder.other cly. 1-2-3 have 125 psi compression 4-5 110. leak down check show...
April 13, 2006
2001 Ford Explorer XLS 4.0L Poor Idle Quality, Misfire, MIL Lamp on, when cold VIN: 1FMZU72E01
P0304: misfire detected cyl 4. ... problem three times now. In March of 05 it came to me as an overheat problem. The t-stat had broken and caused the vehical to blow the coolent out of the resivour. I replaced the stat filled it and all was well until December of 05. The owner came and requ...
April 19, 2006
1998 Volvo S70 2.4L Misfire, MIL Lamp on VIN: YV1LS5539W
P0304: cyl. 4 misfire. Vehicle can in to shop with multiple codes stored in memory. Codes were misfire in all cylinders and a code for rich bank 1 (P0174) which has not returned since tune-up was performed. Codes do not return when under load, only when sitting at idle do codes reap...
April 19, 2006
2001 Ford Explorer XLS 4.0L Poor Idle Quality, Misfire, MIL Lamp on, when cold VIN: 1FMZU72E01
P0304: misfire detected cyl 4. ... problem three times now. In March of 05 it came to me as an overheat problem. The t-stat had broken and caused the vehical to blow the coolent out of the resivour. I replaced the stat filled it and all was well until December of 05. The owner came and requ...
April 21, 2006
2002 Dodge Ram 1500 Van 3.9L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2B6HB11X62
P0304: Cylinder 4 Misfire Detected. I replaced ign wires(oe)because arcing was observed when misted with water.Cleared dtcs.Still ran very rough.Ran injector balance with snap on scan tool.#4and#6 weak,#3OK. Misfire dtcs not reset,no misfires shown on counter(system test).Now it gets good,scanne...
April 24, 2006
2001 Toyota Prius 1.5L MIL Lamp on, ENGINE NOISE VIN: JT2BK12U81
P0304: Cylinder 4 Misfire Detected. ... with very loud engine noises and the MIL on. After reading some of the archives I got the impression that the gas engine not running properly (MIL IS ON) would cause it not to synch with the electrical motors and that may be the cause of the noise. The noi...
April 25, 2006
2003 Subaru Legacy L 2.5L Misfire, MIL Lamp on VIN: 4S3BH63543
P0304: Cylinder 4 Misfire Detected. this subaru has had the head gaskets done at another shop and the customer says it has been missing at high altitudes since. we work in vail colorado and going over vail pass the altitude is 10,500 feet and is the only time the car acts up. at the top of the p...
April 03, 2006
2000 Nissan Altima GLE 2.4L Misfire VIN: 1N4DL01D0Y
P0304: Cylinder 4 Misfire Detected. This car has a repeat failure of the intake gasket on no. 4 intake port. I know this seems to be a common problem as I have done 3 of these cars for this same problem myself. This is the first one that has come back. I am sure that I got all the old gasket fro...
April 06, 2006
2004 Ford Ranger Edge 3.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR10U64
P0304: miss 4. This ranger misses @ idle & slightly above doesn't seem too miss under load and high speed. cruise emissions are good compression check static is 70 on#6 120 if you add oil to clyinder.other cly. 1-2-3 have 125 psi compression 4-5 110. leak down check show...
April 13, 2006
2001 Ford Explorer XLS 4.0L Poor Idle Quality, Misfire, MIL Lamp on, when cold VIN: 1FMZU72E01
P0304: misfire detected cyl 4. ... problem three times now. In March of 05 it came to me as an overheat problem. The t-stat had broken and caused the vehical to blow the coolent out of the resivour. I replaced the stat filled it and all was well until December of 05. The owner came and requ...
April 19, 2006
1998 Volvo S70 2.4L Misfire, MIL Lamp on VIN: YV1LS5539W
P0304: cyl. 4 misfire. Vehicle can in to shop with multiple codes stored in memory. Codes were misfire in all cylinders and a code for rich bank 1 (P0174) which has not returned since tune-up was performed. Codes do not return when under load, only when sitting at idle do codes reap...
April 19, 2006
2001 Ford Explorer XLS 4.0L Poor Idle Quality, Misfire, MIL Lamp on, when cold VIN: 1FMZU72E01
P0304: misfire detected cyl 4. ... problem three times now. In March of 05 it came to me as an overheat problem. The t-stat had broken and caused the vehical to blow the coolent out of the resivour. I replaced the stat filled it and all was well until December of 05. The owner came and requ...
April 21, 2006
2002 Dodge Ram 1500 Van 3.9L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2B6HB11X62
P0304: Cylinder 4 Misfire Detected. I replaced ign wires(oe)because arcing was observed when misted with water.Cleared dtcs.Still ran very rough.Ran injector balance with snap on scan tool.#4and#6 weak,#3OK. Misfire dtcs not reset,no misfires shown on counter(system test).Now it gets good,scanne...
April 24, 2006
2001 Toyota Prius 1.5L MIL Lamp on, ENGINE NOISE VIN: JT2BK12U81
P0304: Cylinder 4 Misfire Detected. ... with very loud engine noises and the MIL on. After reading some of the archives I got the impression that the gas engine not running properly (MIL IS ON) would cause it not to synch with the electrical motors and that may be the cause of the noise. The noi...
April 25, 2006