Join Now
International Automotive Technicians Network

P0304 Diagnostic Trouble Code Discussion for June 2007

Cylinder 4 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2000 Toyota Tundra SR5 4.7L Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 5TBRT3418Y
P0304: Cylinder 4 Misfire Detected. Hi guys I have this p/u with misfire on cylinder #4 all the time had check coils, there good change water pump and timing belt, because water was leaking on top of crank-sensor suspected problem. any help will be appreciated Thanks in advance.
June 03, 2007
2000 BMW 323Ci 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBABR3343Y
P0304: misfire 4. ... power and mil on. Proceeded to pull codes and do a visual. Pulled a bunch of Oxygen sensor codes related to fuel trim and also some misfire codes. P0301, 302, and 303. Also had a cam sensor code P1397... Proceeded to pull ...
June 04, 2007
1999 Honda Accord LX 2.3L Hesitation, Misfire, MIL Lamp on VIN: 1HGCG6658X
P0304: Cylinder 4 Misfire Detected. ... missfire and check engine light. i pulled the all misfire codes and 2 mass air meter codes. i took car of the air meter codes by replaceing it. For the missfire we did plugs wires cap ect. and it was fine. little did we know the car started to miss agian a...
June 05, 2007
2000 BMW 323i 2.5L Poor Idle Quality, MIL Lamp on VIN: WBAAM3347Y
P0304: cylinder 4 misfire. customer also states oil light comes on after heats up, will go off after restarting vehicle, checked engine oil level, level is good, oil looks fairly new, no evidence of oil leaks, no timing component repair history, rough engine idle, misfire codes for all ...
June 06, 2007
1999 Honda Accord LX 2.3L Hesitation, Misfire, MIL Lamp on VIN: 1HGCG6658X
P0304: Cylinder 4 Misfire Detected. ... missfire and check engine light. i pulled the all misfire codes and 2 mass air meter codes. i took car of the air meter codes by replaceing it. For the missfire we did plugs wires cap ect. and it was fine. little did we know the car started to miss agian a...
June 06, 2007
2000 BMW 323i 2.5L Poor Idle Quality, MIL Lamp on VIN: WBAAM3347Y
P0304: cylinder 4 misfire. customer also states oil light comes on after heats up, will go off after restarting vehicle, checked engine oil level, level is good, oil looks fairly new, no evidence of oil leaks, no timing component repair history, rough engine idle, misfire codes for all ...
June 07, 2007
2003 Mercedes-Benz C240 2.6L Misfire, MIL Lamp on VIN: WDBRF61JX2
P0304: MIsfire detected cylender 4. This little MB has got us scratching our heads. All scan data is normal. fuel trims are good the car runs perfect. I never feel a misfire or hiccup untill the vehicle is driven at full throttle and reaches 4800rpm's then it cuts out cylender #4 injector and ru...
June 07, 2007
1999 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH5280X
P0304: Cylinder 4 Misfire Detected. ... runnig very rough and a luandry list dtcs. tuned it and replaced icm and ckp up and cleared the multiple codes for cylinder missfires and she ran beutifull. customer returned today with the mil on i pulled the code p0304 cylinder 4 missfire. but the car ru...
June 07, 2007
2003 Mercedes-Benz C240 2.6L Misfire, MIL Lamp on VIN: WDBRF61JX2
P0304: MIsfire detected cylender 4. This little MB has got us scratching our heads. All scan data is normal. fuel trims are good the car runs perfect. I never feel a misfire or hiccup untill the vehicle is driven at full throttle and reaches 4800rpm's then it cuts out cylender #4 injector and ru...
June 08, 2007
2000 Ford F-150 Lariat 4.6L Misfire VIN: 1FTRX17W5Y
P0304: Cylinder 4 misfire. Vehicle came in with misfire on #4 cylinder. Customer said vehicle was running rough, they diagnosed a bad coil and replaced it. The misfire was gone, but the coil only lasted three hours before it failed again. They replaced it a second time and it lasted 2 h...
June 11, 2007
2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDT13W7Y
P0304: 4 cyl. misfire. hello, i would likeany help on blazer, shows only misfire at #4.ltft on bank 2 only -15% bank 1 near 0. disconnecting small vacuum hose stops misfire count
June 12, 2007
2004 Hyundai Santa Fe 2.4L Hesitation, Misfire, MIL Lamp on VIN: KM8SB12BX4
P0304: Cylinder 4 Misfire Detected. lost, we have replaced everything except the ecm in an attempt to correct the check engine light from coming on, plugs,coils, wires,cranksensor, we have followed alldata test procedures, we have come up short of fixing the problem. has anyone ever seen this be...
June 13, 2007
2000 Chrysler Grand Voyager SE 3.3L Poor Idle Quality, Misfire, MIL Lamp on, Long Crank Hot Start VIN: 1C4GJ44G2Y
P0304: Cylinder 4 Misfire Detected. ... coolent leaking from headgasket the heads were sent out and overhauled the car left running good .About 1 month later it came back with CEL on still running fine. It had a code P0204 #4 injecter or circuit failure Scoped out injecter pattern was bad Ohmed ...
June 14, 2007
1999 Dodge Ram 1500 Van 5.2L Hesitation, Misfire, MIL Lamp on VIN: 1B7HF13Y7X
P0304: Cylinder 4 Misfire Detected. vehicle brought in after vehicle stalled and hard start - i suspected vehicle flooded so under wot vehicle started to get in shop. misfiring at idle - replace cap, rotor and wire set (felt arcing through wires) truck no longer misses at idle but on road test t...
June 18, 2007
2000 Honda Accord EX 2.3L Misfire, MIL Lamp on VIN: 1HGCG5664Y
P0304: Cylinder 4 Misfire Detected. Cust came in last week with MIL on, P0133, O2 slow response. I looked at a wiring diagram, spliced the new 'universal' sensor in, road tested and cleared the code. I was pretty careful about the wiring and used the sensors instructions along with an engine wir...
June 20, 2007
1999 Dodge Ram 1500 Van 5.2L Hesitation, Misfire, MIL Lamp on VIN: 1B7HF13Y7X
P0304: Cylinder 4 Misfire Detected. vehicle brought in after vehicle stalled and hard start - i suspected vehicle flooded so under wot vehicle started to get in shop. misfiring at idle - replace cap, rotor and wire set (felt arcing through wires) truck no longer misses at idle but on road test t...
June 26, 2007
2002 Mitsubishi Eclipse GS 2.4L Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 4A3AC44G22
P0304: Cylinder 4 Misfire Detected. HELP!!! I recieved this vehicle the first day I started a new job. I was told to remove the cylinder head to have a valve job performed. My mistake was not asking why! About 1/3 of the way into pulling head, my superviso asked what I thought. Reassembled and s...
June 26, 2007
2000 Toyota Tundra SR5 4.7L Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 5TBRT3418Y
P0304: Cylinder 4 Misfire Detected. Hi guys I have this p/u with misfire on cylinder #4 all the time had check coils, there good change water pump and timing belt, because water was leaking on top of crank-sensor suspected problem. any help will be appreciated Thanks in advance.
June 03, 2007
2000 BMW 323Ci 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBABR3343Y
P0304: misfire 4. ... power and mil on. Proceeded to pull codes and do a visual. Pulled a bunch of Oxygen sensor codes related to fuel trim and also some misfire codes. P0301, 302, and 303. Also had a cam sensor code P1397... Proceeded to pull ...
June 04, 2007
1999 Honda Accord LX 2.3L Hesitation, Misfire, MIL Lamp on VIN: 1HGCG6658X
P0304: Cylinder 4 Misfire Detected. ... missfire and check engine light. i pulled the all misfire codes and 2 mass air meter codes. i took car of the air meter codes by replaceing it. For the missfire we did plugs wires cap ect. and it was fine. little did we know the car started to miss agian a...
June 05, 2007
2000 BMW 323i 2.5L Poor Idle Quality, MIL Lamp on VIN: WBAAM3347Y
P0304: cylinder 4 misfire. customer also states oil light comes on after heats up, will go off after restarting vehicle, checked engine oil level, level is good, oil looks fairly new, no evidence of oil leaks, no timing component repair history, rough engine idle, misfire codes for all ...
June 06, 2007
1999 Honda Accord LX 2.3L Hesitation, Misfire, MIL Lamp on VIN: 1HGCG6658X
P0304: Cylinder 4 Misfire Detected. ... missfire and check engine light. i pulled the all misfire codes and 2 mass air meter codes. i took car of the air meter codes by replaceing it. For the missfire we did plugs wires cap ect. and it was fine. little did we know the car started to miss agian a...
June 06, 2007
2000 BMW 323i 2.5L Poor Idle Quality, MIL Lamp on VIN: WBAAM3347Y
P0304: cylinder 4 misfire. customer also states oil light comes on after heats up, will go off after restarting vehicle, checked engine oil level, level is good, oil looks fairly new, no evidence of oil leaks, no timing component repair history, rough engine idle, misfire codes for all ...
June 07, 2007
2003 Mercedes-Benz C240 2.6L Misfire, MIL Lamp on VIN: WDBRF61JX2
P0304: MIsfire detected cylender 4. This little MB has got us scratching our heads. All scan data is normal. fuel trims are good the car runs perfect. I never feel a misfire or hiccup untill the vehicle is driven at full throttle and reaches 4800rpm's then it cuts out cylender #4 injector and ru...
June 07, 2007
1999 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH5280X
P0304: Cylinder 4 Misfire Detected. ... runnig very rough and a luandry list dtcs. tuned it and replaced icm and ckp up and cleared the multiple codes for cylinder missfires and she ran beutifull. customer returned today with the mil on i pulled the code p0304 cylinder 4 missfire. but the car ru...
June 07, 2007
2003 Mercedes-Benz C240 2.6L Misfire, MIL Lamp on VIN: WDBRF61JX2
P0304: MIsfire detected cylender 4. This little MB has got us scratching our heads. All scan data is normal. fuel trims are good the car runs perfect. I never feel a misfire or hiccup untill the vehicle is driven at full throttle and reaches 4800rpm's then it cuts out cylender #4 injector and ru...
June 08, 2007
2000 Ford F-150 Lariat 4.6L Misfire VIN: 1FTRX17W5Y
P0304: Cylinder 4 misfire. Vehicle came in with misfire on #4 cylinder. Customer said vehicle was running rough, they diagnosed a bad coil and replaced it. The misfire was gone, but the coil only lasted three hours before it failed again. They replaced it a second time and it lasted 2 h...
June 11, 2007
2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDT13W7Y
P0304: 4 cyl. misfire. hello, i would likeany help on blazer, shows only misfire at #4.ltft on bank 2 only -15% bank 1 near 0. disconnecting small vacuum hose stops misfire count
June 12, 2007
2004 Hyundai Santa Fe 2.4L Hesitation, Misfire, MIL Lamp on VIN: KM8SB12BX4
P0304: Cylinder 4 Misfire Detected. lost, we have replaced everything except the ecm in an attempt to correct the check engine light from coming on, plugs,coils, wires,cranksensor, we have followed alldata test procedures, we have come up short of fixing the problem. has anyone ever seen this be...
June 13, 2007
2000 Chrysler Grand Voyager SE 3.3L Poor Idle Quality, Misfire, MIL Lamp on, Long Crank Hot Start VIN: 1C4GJ44G2Y
P0304: Cylinder 4 Misfire Detected. ... coolent leaking from headgasket the heads were sent out and overhauled the car left running good .About 1 month later it came back with CEL on still running fine. It had a code P0204 #4 injecter or circuit failure Scoped out injecter pattern was bad Ohmed ...
June 14, 2007
1999 Dodge Ram 1500 Van 5.2L Hesitation, Misfire, MIL Lamp on VIN: 1B7HF13Y7X
P0304: Cylinder 4 Misfire Detected. vehicle brought in after vehicle stalled and hard start - i suspected vehicle flooded so under wot vehicle started to get in shop. misfiring at idle - replace cap, rotor and wire set (felt arcing through wires) truck no longer misses at idle but on road test t...
June 18, 2007
2000 Honda Accord EX 2.3L Misfire, MIL Lamp on VIN: 1HGCG5664Y
P0304: Cylinder 4 Misfire Detected. Cust came in last week with MIL on, P0133, O2 slow response. I looked at a wiring diagram, spliced the new 'universal' sensor in, road tested and cleared the code. I was pretty careful about the wiring and used the sensors instructions along with an engine wir...
June 20, 2007
1999 Dodge Ram 1500 Van 5.2L Hesitation, Misfire, MIL Lamp on VIN: 1B7HF13Y7X
P0304: Cylinder 4 Misfire Detected. vehicle brought in after vehicle stalled and hard start - i suspected vehicle flooded so under wot vehicle started to get in shop. misfiring at idle - replace cap, rotor and wire set (felt arcing through wires) truck no longer misses at idle but on road test t...
June 26, 2007
2002 Mitsubishi Eclipse GS 2.4L Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 4A3AC44G22
P0304: Cylinder 4 Misfire Detected. HELP!!! I recieved this vehicle the first day I started a new job. I was told to remove the cylinder head to have a valve job performed. My mistake was not asking why! About 1/3 of the way into pulling head, my superviso asked what I thought. Reassembled and s...
June 26, 2007