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P0304 Diagnostic Trouble Code Discussion for July 2011

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2002 Honda Odyssey EX 3.5L Misfire VIN: 2HKRL18052
P0304: Cylinder 4 Misfire Detected. Good customer just bought used vehicle with check engine light on. Checked for codes and found misfires in cylinders 3,4, and 5. Suggested spark plugs because they were original. Removed and replaced - Spark plugs, cleared codes, test drove, shipped vehicle. N...
July 11, 2011
2003 Volkswagen Golf GLS 2.0L Misfire VIN: 9BWBK61J03
P0304: 4 Misfire. Vehicle came in several weeks ago with a check engine light, listed codes, and the complaint of a severe loss of power. Owner described the power loss as feeling like a misfire of one, possibly two cylinders. We were unable to duplicate the symptom in approx. ...
July 11, 2011
2001 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13W51
P0304: Cyl 4 misfire. ... drivability concerns.Codes were P0300, P0302. On the test drive, the misfire monitor showed very light misfires on CYL. 2,4,3,6. The cam timing PID would show a change of between -1 to -4 deg. We cked for play in the timing chain,and dist drive, they seeme...
July 12, 2011
1997 Eagle Talon 2.0L MIL Lamp on VIN: 4E3AK24Y8V
P0304: Cylinder 4 Misfire Detected. Hello, sorry but this one may be lacking in some information but to be honest there is not a lot I have done due to the fact that this car has no plates on it, it is here from another shop looking for help on it. The vehicle runs fine every time we run it, and...
July 13, 2011
2001 Toyota Celica GT 1.8L Hesitation, Stall, Misfire, MIL Lamp on VIN: JTDDR32T21
P0304: Cylinder 4 Misfire Detected. This car is killing us! Runs lean, has no power, runs like clogged exhaust. Backpressure is nill, vacuum seems a little lower, but not crazy. 18" and steady. Car has a new MAF, same results. NEW fuel injectors...same results. NEW O2 sensor, SAME. LTFT is +...
July 15, 2011
2001 Toyota Celica GT 1.8L Hesitation, Stall, Misfire, MIL Lamp on VIN: JTDDR32T21
P0304: Cylinder 4 Misfire Detected. This car is killing us! Runs lean, has no power, runs like clogged exhaust. Backpressure is nill, vacuum seems a little lower, but not crazy. 18" and steady. Car has a new MAF, same results. NEW fuel injectors...same results. NEW O2 sensor, SAME. LTFT is +...
July 17, 2011
1999 BMW 323i 2.5L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: WBAAM3338X
Hello all, I need some help on my wifes car.I just bought this thing,it will run fine until check engine light comes on.Missfire codes and lean codes.I replaced the vent valve and hoses as usual problem areas\.Also replaced the plugs and coils while doing the ...
July 19, 2011
2001 Ford Focus ZX3 2.0L Misfire, MIL Lamp on VIN: 3FAFP31341
P0304: misfire 4. Good morning been fighting this focus for the last couple weeks,started as a missfire in cyls.1 &4 changed plugs and wires, still had missfireson power balance test, replaced coil missfire gone, sent customer on his way. couple days later came back miss on...
July 19, 2011
2002 Honda Odyssey EX 3.5L Misfire VIN: 2HKRL18052
P0304: Cylinder 4 Misfire Detected. Good customer just bought used vehicle with check engine light on. Checked for codes and found misfires in cylinders 3,4, and 5. Suggested spark plugs because they were original. Removed and replaced - Spark plugs, cleared codes, test drove, shipped vehicle. N...
July 19, 2011
2000 Jeep Cherokee Classic 4.0L Misfire, MIL Lamp on VIN: 1J4FF48S4Y
P0304: Cylinder 4 Misfire Detected. Ign coil replaced at different shop for intermittent misfire. Still had intermittent misfire. When misfire starts and ignition is turned off and restarted misfire goes away. Misfire will come back at any time. Can not find any bad wires and everything test ok....
July 20, 2011
2003 Toyota Corolla CE 1.8L Poor Idle Quality VIN: 1NXBR43E23
P0304: Cylinder 4 Misfire Detected. hey whats up guys im having trouble with this toyota, the car came in with all these codes, i decided to check fuel system , had a bad fuel pump. check it with scope bad waveform, but the car still runs really bad on idle , [...] at 0volts both all the time , ...
July 26, 2011
1996 Isuzu Trooper LS 3.2L Misfire VIN: JACDJ58V2T
P0304: Cylinder 4 Misfire Detected. This truck about a year ago came in with a brocken crankshaft and a transmission problem, and so we put a used engine and rebuild the transmission, every since it's been acting up. I scan it it had po304 code check injector pulse,resistance about 11.9 put a ne...
July 27, 2011
2000 Toyota Camry XLE 3.0L Poor Idle Quality, Misfire VIN: 4T1BF28K2Y
P0304: Cylinder 4 Misfire Detected. This car came to me after another shop owner pulled all his hair out. He had it for the past three months. There is no "Check Engine" light on but is storing the noted codes. After start up, 2,4 and 6 cylinder misfire and then clears up. I think I have...
July 27, 2011
2000 Volkswagen Passat GLS 2.8L Hesitation VIN: WVWMD23B3Y
P0304: cylinder 4 misfire. I have this 2000 VW Passat that misses when cold. (check engine light flashes, misfire 1 and 4 cylinders) Once at operating temerature it runs great. I can clear the check engine light and and it will not return until cold again. I have checked compression (13...
July 27, 2011
2000 Volkswagen Passat GLS 2.8L Hesitation VIN: WVWMD23B3Y
P0304: cylinder 4 misfire. I have this 2000 VW Passat that misses when cold. (check engine light flashes, misfire 1 and 4 cylinders) Once at operating temerature it runs great. I can clear the check engine light and and it will not return until cold again. I have checked compression (13...
July 29, 2011
2002 Honda Odyssey EX 3.5L Misfire VIN: 2HKRL18052
P0304: Cylinder 4 Misfire Detected. Good customer just bought used vehicle with check engine light on. Checked for codes and found misfires in cylinders 3,4, and 5. Suggested spark plugs because they were original. Removed and replaced - Spark plugs, cleared codes, test drove, shipped vehicle. N...
July 11, 2011
2003 Volkswagen Golf GLS 2.0L Misfire VIN: 9BWBK61J03
P0304: 4 Misfire. Vehicle came in several weeks ago with a check engine light, listed codes, and the complaint of a severe loss of power. Owner described the power loss as feeling like a misfire of one, possibly two cylinders. We were unable to duplicate the symptom in approx. ...
July 11, 2011
2001 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13W51
P0304: Cyl 4 misfire. ... drivability concerns.Codes were P0300, P0302. On the test drive, the misfire monitor showed very light misfires on CYL. 2,4,3,6. The cam timing PID would show a change of between -1 to -4 deg. We cked for play in the timing chain,and dist drive, they seeme...
July 12, 2011
1997 Eagle Talon 2.0L MIL Lamp on VIN: 4E3AK24Y8V
P0304: Cylinder 4 Misfire Detected. Hello, sorry but this one may be lacking in some information but to be honest there is not a lot I have done due to the fact that this car has no plates on it, it is here from another shop looking for help on it. The vehicle runs fine every time we run it, and...
July 13, 2011
2001 Toyota Celica GT 1.8L Hesitation, Stall, Misfire, MIL Lamp on VIN: JTDDR32T21
P0304: Cylinder 4 Misfire Detected. This car is killing us! Runs lean, has no power, runs like clogged exhaust. Backpressure is nill, vacuum seems a little lower, but not crazy. 18" and steady. Car has a new MAF, same results. NEW fuel injectors...same results. NEW O2 sensor, SAME. LTFT is +...
July 15, 2011
2001 Toyota Celica GT 1.8L Hesitation, Stall, Misfire, MIL Lamp on VIN: JTDDR32T21
P0304: Cylinder 4 Misfire Detected. This car is killing us! Runs lean, has no power, runs like clogged exhaust. Backpressure is nill, vacuum seems a little lower, but not crazy. 18" and steady. Car has a new MAF, same results. NEW fuel injectors...same results. NEW O2 sensor, SAME. LTFT is +...
July 17, 2011
1999 BMW 323i 2.5L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: WBAAM3338X
Hello all, I need some help on my wifes car.I just bought this thing,it will run fine until check engine light comes on.Missfire codes and lean codes.I replaced the vent valve and hoses as usual problem areas\.Also replaced the plugs and coils while doing the ...
July 19, 2011
2001 Ford Focus ZX3 2.0L Misfire, MIL Lamp on VIN: 3FAFP31341
P0304: misfire 4. Good morning been fighting this focus for the last couple weeks,started as a missfire in cyls.1 &4 changed plugs and wires, still had missfireson power balance test, replaced coil missfire gone, sent customer on his way. couple days later came back miss on...
July 19, 2011
2002 Honda Odyssey EX 3.5L Misfire VIN: 2HKRL18052
P0304: Cylinder 4 Misfire Detected. Good customer just bought used vehicle with check engine light on. Checked for codes and found misfires in cylinders 3,4, and 5. Suggested spark plugs because they were original. Removed and replaced - Spark plugs, cleared codes, test drove, shipped vehicle. N...
July 19, 2011
2000 Jeep Cherokee Classic 4.0L Misfire, MIL Lamp on VIN: 1J4FF48S4Y
P0304: Cylinder 4 Misfire Detected. Ign coil replaced at different shop for intermittent misfire. Still had intermittent misfire. When misfire starts and ignition is turned off and restarted misfire goes away. Misfire will come back at any time. Can not find any bad wires and everything test ok....
July 20, 2011
2003 Toyota Corolla CE 1.8L Poor Idle Quality VIN: 1NXBR43E23
P0304: Cylinder 4 Misfire Detected. hey whats up guys im having trouble with this toyota, the car came in with all these codes, i decided to check fuel system , had a bad fuel pump. check it with scope bad waveform, but the car still runs really bad on idle , [...] at 0volts both all the time , ...
July 26, 2011
1996 Isuzu Trooper LS 3.2L Misfire VIN: JACDJ58V2T
P0304: Cylinder 4 Misfire Detected. This truck about a year ago came in with a brocken crankshaft and a transmission problem, and so we put a used engine and rebuild the transmission, every since it's been acting up. I scan it it had po304 code check injector pulse,resistance about 11.9 put a ne...
July 27, 2011
2000 Toyota Camry XLE 3.0L Poor Idle Quality, Misfire VIN: 4T1BF28K2Y
P0304: Cylinder 4 Misfire Detected. This car came to me after another shop owner pulled all his hair out. He had it for the past three months. There is no "Check Engine" light on but is storing the noted codes. After start up, 2,4 and 6 cylinder misfire and then clears up. I think I have...
July 27, 2011
2000 Volkswagen Passat GLS 2.8L Hesitation VIN: WVWMD23B3Y
P0304: cylinder 4 misfire. I have this 2000 VW Passat that misses when cold. (check engine light flashes, misfire 1 and 4 cylinders) Once at operating temerature it runs great. I can clear the check engine light and and it will not return until cold again. I have checked compression (13...
July 27, 2011
2000 Volkswagen Passat GLS 2.8L Hesitation VIN: WVWMD23B3Y
P0304: cylinder 4 misfire. I have this 2000 VW Passat that misses when cold. (check engine light flashes, misfire 1 and 4 cylinders) Once at operating temerature it runs great. I can clear the check engine light and and it will not return until cold again. I have checked compression (13...
July 29, 2011