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P0304 Diagnostic Trouble Code Discussion for June 2004

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1998 Chevrolet K3500 Cheyenne 6.5L Excessive Emissions, Misfire VIN: 1GTHK33F6W
P0304: Cylinder 4 Misfire Detected. This truck was towed to me. When the truck got here It started right up for me, but it was smoking like mad and it was missing on one or more cylinders. I scaned it and had multiple code for misfire on cylinders 1,3,5 and 6. I cleared the codes and ran it agai...
June 01, 2004
1999 Cadillac Catera 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: W06VR52R4X
P0304: Cylinder 4 Misfire Detected. vehicle has random misfires on start up,noticed as soon as completed warm up cycle vehicle smoothed out.replaced plugs & 246 coil pack.coil pack was rusted in housing & 246 was prominent missies at first then switched to 135 and now completly random.cl...
June 04, 2004
1999 Volkswagen Golf GLS 2.0L MIL Lamp on VIN: WVWGA31J1X
P0304: cylinder 4 misfire. car came in with check engine light on and would not accel. on hard accel. accel. slowly and takes gas good. checked codes and pulled 6 codes, p1129-ling term trim bank 1. po300-random misfire, po301-cylinder #1 misfire, po302-cylinder #2 misfire, po303-cylind...
June 07, 2004
1996 Ford F-150 Eddie Bauer 4.9L Misfire, MIL Lamp on VIN: 1FTEF15Y2T
P0304: cyl. 4 misfire. Hello group, Need some help with this F-150. As you can see in the repair history this truck has an intermittent code PO304 that won't go away. Today I drove the truck[ran good], removed #4 plug again and it was burning clean. I rechecked fuel pressure, checke...
June 22, 2004
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDAS140T
P0304: Cyl 4 miss fire. This Windstar failed an OBD II emission test. Prior to the lean codes I cleaned the EGR ports that were clogged. I had a code for restricted EGR flow. Cleaning of the ports cleared that code. I suspected a MAF problem but the voltage seems normal at idle (.6 V...
June 25, 2004
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDAS140T
P0304: Cyl 4 miss fire. This Windstar failed an OBD II emission test. Prior to the lean codes I cleaned the EGR ports that were clogged. I had a code for restricted EGR flow. Cleaning of the ports cleared that code. I suspected a MAF problem but the voltage seems normal at idle (.6 V...
June 26, 2004