P0304 Diagnostic Trouble Code Discussion for October 2013
Cylinder 4 Misfire Detected
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| Help Request | Posted | |
| 2001 Lincoln LS 3.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1LNHM87A01 P0304: Misfire Cylinder 4. I'm getting a P0304, P0303, and P0300 stored in memory. The car runs rough at idle, Fuel Trims show bank 1 as -25% and bank 2 as +25%. I have replaced all spark plugs and #4 coil with no change. EGR Valve is functioning correctly with no leakage. No excessive ... |
October 08, 2013 | |
| 2008 Volkswagen Passat Komfort 2.0L Misfire, MIL Lamp on VIN: WVWAK73C58 P0304: cylinder 4 misfire. ... rough running problem, after first scan and misfire monitering we had cyl. 3 was dead, and intermittent codes for cyl. 1 and cyl. 4 misfires. after swapping plugs and coils around and a compression test we diagnosed faulty fuel injector. installed all new... |
October 09, 2013 | |
| 2004 Toyota Sequoia SR5 4.7L Poor Idle Quality, Misfire VIN: 5TDBT44A44 P0304: Cylinder 4 Misfire Detected. The customer towed this one in because they heard a loud noise and the vehicle began running rough. Codes were the misfire codes above. Further diag we found the timing belt/marks jumped 5 teeth on the bank 2 cylinder head. We then removed the timing belt to c... |
October 16, 2013 | |
| 2002 Volkswagen Jetta GL 2.0L Misfire VIN: 3VWRB69M72 P0304: 4 Misfire. Car arrived with the listed codes stored. Also had a coolant temp code stored. Ran very poorly. Started by checking the basics. Had spark and injector pulse on all 4 holes. Plugs and wires were original, so we replaced them with OE parts. Also replaced the the... |
October 21, 2013 | |
| 2004 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29664 P0304: Cylinder 4 Misfire Detected. I'm trying to help a good friend out. His car runs extremely rough. CEL blinks under load, misfires consistently. Pulled codes and found misfires in all cylinders. I don't want him to spend a bunch of money throwing parts at this car so we did some testing. We... |
October 28, 2013 | |
| 2003 Honda Civic EX 1.7L Misfire, MIL Lamp on VIN: 1HGEM21993 P0304: Cylinder 4 Misfire Detected. Client replaced spark plugs with new OE plugs, still misfires, test drove fully warmed up, engine misfires at 2000-3000 rpm, at very light load, does not misfire any higher or at idle or heavier loads, all scan data readings look normal while misfiring, plugs ... |
October 29, 2013 | |
| 2004 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29664 P0304: Cylinder 4 Misfire Detected. I'm trying to help a good friend out. His car runs extremely rough. CEL blinks under load, misfires consistently. Pulled codes and found misfires in all cylinders. I don't want him to spend a bunch of money throwing parts at this car so we did some testing. We... |
October 29, 2013 | |
| 2005 Jeep Liberty Renegade 3.7L Misfire, MIL Lamp on VIN: 1J4GL38KX5 P0304: Cylinder 4 Misfire Detected. this jeep came in for check engine light on found cat to be bad and also has miss fire on number 4 cylinder.misfire is most noticeable at idle high way speeds you feel nothing.verified mis with scanner on number4.i swapped plugs and coil and injector to see if... |
October 30, 2013 |
