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P0304 Diagnostic Trouble Code Discussion for September 2011

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1999 Honda Accord EX 3.0L Misfire VIN: 1HGCG1653X
P0304: Cylinder 4 Misfire Detected. Have checked every possible thing i might have done wrong, even smoked it, nothing, even put in new plugs and checked timing mark- aligned perfectly. And all i see in this tsb for fuel pressure regulator and ecm. Could there be something else i am missing and ...
September 02, 2011
2001 Honda Accord LX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1HGCG22541
P0304: Cylinder 4 Misfire Detected. This Honda idles very poorly. Has random misfire code and misfire codes for all cylinders. All cylinders have 170psi compression and new spark plugs. Smoked out intake and found no vacuum leaks. Removed EGR valve, and made sure it was not stuck open. Even bloc...
September 02, 2011
2001 Honda Accord LX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1HGCG22541
P0304: Cylinder 4 Misfire Detected. This Honda idles very poorly. Has random misfire code and misfire codes for all cylinders. All cylinders have 170psi compression and new spark plugs. Smoked out intake and found no vacuum leaks. Removed EGR valve, and made sure it was not stuck open. Even bloc...
September 07, 2011
2006 Volkswagen Beetle 2.5 2.5L Misfire, MIL Lamp on VIN: 3VWRW31C16
P0304: testing and results. Thanks in advance. This Beetle came in with PO300,302 & 304. We put 5 new coils and plugs. Same thing. Then we did injection service. Same thing. I smoked it hot and cold, no leaks. Swaped injectors,same. Did compression test , all 175. Ramped amp new coil...
September 14, 2011
2006 Volkswagen Beetle 2.5 2.5L Misfire, MIL Lamp on VIN: 3VWRW31C16
P0304: testing and results. Thanks in advance. This Beetle came in with PO300,302 & 304. We put 5 new coils and plugs. Same thing. Then we did injection service. Same thing. I smoked it hot and cold, no leaks. Swaped injectors,same. Did compression test , all 175. Ramped amp new coil...
September 15, 2011
2002 Mitsubishi Lancer ES 2.0L Hesitation VIN: JA3A26E62U
P0304: Cylinder 4 Misfire Detected. good customer, towed back from canada, where it broke a timing belt. they put in a belt. still had bent valves. we replaced valves, and had belt off time a tooth at first because we used the other shops timing marks. checked timing by factory marks 5 times now...
September 19, 2011
2002 Honda CR-V EX 2.4L Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 123HJYJKHH
P0304: Cylinder 4 Misfire Detected. I don't know what i am missing here. If you try to hold the vehicle above idle it breaks up and pops almost like the timing is off. If you let the vehicle idle it idles good for about 10-15secs than stalls. Compression looks good. Cat is not clogged, it seems ...
September 21, 2011
2003 Acura MDX 3.5L Misfire, MIL Lamp on VIN: 2HNYD18693
P0304: Cylinder 4 Misfire Detected. ... history). All went well, first road test the vehicle ran great. Performed alignment, road tested again to check steering wheel centering, vehicle misfired, code P0304 - found #4 coil was no good, swapped it out, road tested...
September 23, 2011
1998 BMW 740iL 4.4L Misfire VIN: WBAGJ8329W
P0304: cyl 4 misfire. This car runs fine until you give it full throttle and the rpms get above about 4k rpm. It then starts to hesitate, doesnt feel exactly like a mifire more like it just starts to slow down. then the computer seems to turn off the cylinders that are misfiring. i...
September 28, 2011
1999 Honda Accord EX 3.0L Misfire VIN: 1HGCG1653X
P0304: Cylinder 4 Misfire Detected. Have checked every possible thing i might have done wrong, even smoked it, nothing, even put in new plugs and checked timing mark- aligned perfectly. And all i see in this tsb for fuel pressure regulator and ecm. Could there be something else i am missing and ...
September 02, 2011
2001 Honda Accord LX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1HGCG22541
P0304: Cylinder 4 Misfire Detected. This Honda idles very poorly. Has random misfire code and misfire codes for all cylinders. All cylinders have 170psi compression and new spark plugs. Smoked out intake and found no vacuum leaks. Removed EGR valve, and made sure it was not stuck open. Even bloc...
September 02, 2011
2001 Honda Accord LX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1HGCG22541
P0304: Cylinder 4 Misfire Detected. This Honda idles very poorly. Has random misfire code and misfire codes for all cylinders. All cylinders have 170psi compression and new spark plugs. Smoked out intake and found no vacuum leaks. Removed EGR valve, and made sure it was not stuck open. Even bloc...
September 07, 2011
2006 Volkswagen Beetle 2.5 2.5L Misfire, MIL Lamp on VIN: 3VWRW31C16
P0304: testing and results. Thanks in advance. This Beetle came in with PO300,302 & 304. We put 5 new coils and plugs. Same thing. Then we did injection service. Same thing. I smoked it hot and cold, no leaks. Swaped injectors,same. Did compression test , all 175. Ramped amp new coil...
September 14, 2011
2006 Volkswagen Beetle 2.5 2.5L Misfire, MIL Lamp on VIN: 3VWRW31C16
P0304: testing and results. Thanks in advance. This Beetle came in with PO300,302 & 304. We put 5 new coils and plugs. Same thing. Then we did injection service. Same thing. I smoked it hot and cold, no leaks. Swaped injectors,same. Did compression test , all 175. Ramped amp new coil...
September 15, 2011
2002 Mitsubishi Lancer ES 2.0L Hesitation VIN: JA3A26E62U
P0304: Cylinder 4 Misfire Detected. good customer, towed back from canada, where it broke a timing belt. they put in a belt. still had bent valves. we replaced valves, and had belt off time a tooth at first because we used the other shops timing marks. checked timing by factory marks 5 times now...
September 19, 2011
2002 Honda CR-V EX 2.4L Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 123HJYJKHH
P0304: Cylinder 4 Misfire Detected. I don't know what i am missing here. If you try to hold the vehicle above idle it breaks up and pops almost like the timing is off. If you let the vehicle idle it idles good for about 10-15secs than stalls. Compression looks good. Cat is not clogged, it seems ...
September 21, 2011
2003 Acura MDX 3.5L Misfire, MIL Lamp on VIN: 2HNYD18693
P0304: Cylinder 4 Misfire Detected. ... history). All went well, first road test the vehicle ran great. Performed alignment, road tested again to check steering wheel centering, vehicle misfired, code P0304 - found #4 coil was no good, swapped it out, road tested...
September 23, 2011
1998 BMW 740iL 4.4L Misfire VIN: WBAGJ8329W
P0304: cyl 4 misfire. This car runs fine until you give it full throttle and the rpms get above about 4k rpm. It then starts to hesitate, doesnt feel exactly like a mifire more like it just starts to slow down. then the computer seems to turn off the cylinders that are misfiring. i...
September 28, 2011