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P0304 Diagnostic Trouble Code Discussion for April 2009

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2002 Honda Accord EX 3.0L Misfire, MIL Lamp on VIN: 1HGCG16592
P0304: Cylinder 4 Misfire Detected. car came in with CEL flashing / misfire codes. Happened to cust. suddenly after refueling. This is a 1st time customer. Misfire codes for 1,2 & 4. Fuel pres. good. No intake leaks. Checked front bank plugs / swapped around plugs and coils to see if misfire...
April 02, 2009
2004 Dodge Grand Caravan SXT 3.8L Misfire, MIL Lamp on VIN: 2D4GP44L14
P0304: Cylinder 4 Misfire Detected. Hi, i have this dodge caravan here with a 3.8 liter (not a 3.3 like it says above) that has a slight miss at idle and sometimes on accel. While the car is idleing it will run smooth then go into a misfire for as little as a few seconds or as long as a few minu...
April 06, 2009
1997 Kia Sportage 2.0L Poor Idle Quality, MIL Lamp on VIN: KNDJA7232V
P0304: Cylinder 4 Misfire Detected. Hi group, this Kia starts up good but starts to run rough sometimes the computer goes in and out of closed loop the coolant temp stays the same about 190 the other sensors look fine but when you drive this it starts loosing power the o2 goes toward 0 as it slo...
April 07, 2009
2003 Ford Ranger XL 2.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR10DX3
P0304: misfire cyl. 4. ... replaced complete intake manifold, ign. wires and plugs. cleared codes and started up. with in one minute p2004 [ intake runner control stuck open ], p316 [misfire on start up ] p304 [cyl. #4 misfire] codes returned..check...
April 08, 2009
2003 Dodge Ram 1500 Truck 5.7L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1D7HA16D13
P0304: Cylinder 4 Misfire Detected. ... pretty unfamiliar with this particular system and that I'm not able to devote the time I should be to troubleshooting this vehicle. I run a 1 man shop and I have a hard time making this vehicle a prioroity, but it's my next door neighbor's son's truck. Sor...
April 09, 2009
2003 Dodge Ram 1500 Truck 5.7L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1D7HA16D13
P0304: Cylinder 4 Misfire Detected. ... pretty unfamiliar with this particular system and that I'm not able to devote the time I should be to troubleshooting this vehicle. I run a 1 man shop and I have a hard time making this vehicle a prioroity, but it's my next door neighbor's son's truck. Sor...
April 10, 2009
1998 Ford Ranger Splash 4.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FTYR14X3W
P0304: cylinder 4 misfire. hello to all! i have this 98 ranger that came into my shop with poor idle and check engine light on, pulled codes for misfire on cylinders 3 and 4. misfire is there all the time under all loads. checked for spark and I do have spark at both cylinders. pulled N...
April 16, 2009
2002 Mercedes-Benz CL600 5.8L Misfire VIN: WDBPJ78J02
P0304: cyl 4. PERFORMED OIL CHANGE ON THIS VEHICLE A FEW DAYS AGO. CUSTOMER RETURNED WITH OIL LEAKING FROM OIL FILLER CAP. IF THE OIL FILLER CAP IS TURNED SLIGHTLY PAST THE LOCKING POSITION, IT WILL COCK THE SEAL AND CAUSE OIL TO LEAK OUT UNDER ACCELERATION. CLEANED AREA O...
April 20, 2009
2006 Ford Fusion SEL 3.0L Misfire VIN: 3FAHP08166
P0304: Misfire cylinder 4. Hey Ford guys: I have an 06 Fusion 3.0 DOHC with a steady miss at idle on cylinders 4 & 6. See repair history for how we got there. Doesn't miss off idle, but the engine makes a loud random klanking noises under accel, like the timing chain is loosing tens...
April 27, 2009
2002 Chevrolet Astro LS 4.3L Misfire VIN: 1GNEL19X82
P0304: cylinder 4 misfire. greetings to all this astro van had come in for misfire codes.started doing some testing and i saw cylinder 4 misfiring while watching my misfire counters.i swapped plugs and wires with cyl2 and the mis stayed acylinder 4.i proceeded to do a compression test o...
April 28, 2009
2002 Honda Civic EX 1.7L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1HGEM21932
P0304: misfire cyl 4. veh came in had 303 misfire code. checked plugs had autolites in so we installed ngk's. found no other problems at that time. customer came back had 303, 302, misfires. so we current ramped injectors foound the pintle hump to be gone or just barely noticeable....
April 29, 2009
2000 Acura TL 3.2L Stall, Misfire VIN: 19UUA5663Y
P0304: Cylinder 4 Misfire Detected. Help Acura Techs! This TL has got us chasing our tails. The vehicle will start and run well cold but if left sitting and idling once it is hot it will stumble very slightly on the first throttle application. Once shut off and restarted hot (15+ minutes) it wil...
April 30, 2009
2004 Ford F-150 FX4 5.4L Misfire, MIL Lamp on, Pinging VIN: 1FTPW14524
P0304: Cylinder 4 Misfire. Have fought this one for three weeks, please help. The truck runs fine until it shifts into overdrive at about 55 to 60 mph. Then it starts pinging, then starts missing, then the computer shuts off cylinder 4 injector. This obviously makes it miss badly and th...
April 30, 2009
2004 Mazda Miata 1.8L Misfire VIN: JM1NB33244
P0304: Cylinder 4 Misfire Detected. ... idle miss that sets P0304. Idles like a dead hole. Off idle it seems fine.Runs great down the road. When warmed up the idle miss completely (almost) goes away. If you clear the code when hot, it will not reset until the car sits and gets cold. As stated in...
April 30, 2009
2002 Volkswagen Beetle Sport 1.8L Misfire, MIL Lamp on VIN: 3VWED21C62
P0304: 4 miss fire. This car has a miss fire only when cold. Will start up and idle well however right after you rev it you can watch the miss fires on all cylinders in the data blocks. It has no overheating concerns although I may need to test drive it in different conditions. ...
April 30, 2009
2002 Honda Accord EX 3.0L Misfire, MIL Lamp on VIN: 1HGCG16592
P0304: Cylinder 4 Misfire Detected. car came in with CEL flashing / misfire codes. Happened to cust. suddenly after refueling. This is a 1st time customer. Misfire codes for 1,2 & 4. Fuel pres. good. No intake leaks. Checked front bank plugs / swapped around plugs and coils to see if misfire...
April 02, 2009
2004 Dodge Grand Caravan SXT 3.8L Misfire, MIL Lamp on VIN: 2D4GP44L14
P0304: Cylinder 4 Misfire Detected. Hi, i have this dodge caravan here with a 3.8 liter (not a 3.3 like it says above) that has a slight miss at idle and sometimes on accel. While the car is idleing it will run smooth then go into a misfire for as little as a few seconds or as long as a few minu...
April 06, 2009
1997 Kia Sportage 2.0L Poor Idle Quality, MIL Lamp on VIN: KNDJA7232V
P0304: Cylinder 4 Misfire Detected. Hi group, this Kia starts up good but starts to run rough sometimes the computer goes in and out of closed loop the coolant temp stays the same about 190 the other sensors look fine but when you drive this it starts loosing power the o2 goes toward 0 as it slo...
April 07, 2009
2003 Ford Ranger XL 2.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR10DX3
P0304: misfire cyl. 4. ... replaced complete intake manifold, ign. wires and plugs. cleared codes and started up. with in one minute p2004 [ intake runner control stuck open ], p316 [misfire on start up ] p304 [cyl. #4 misfire] codes returned..check...
April 08, 2009
2003 Dodge Ram 1500 Truck 5.7L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1D7HA16D13
P0304: Cylinder 4 Misfire Detected. ... pretty unfamiliar with this particular system and that I'm not able to devote the time I should be to troubleshooting this vehicle. I run a 1 man shop and I have a hard time making this vehicle a prioroity, but it's my next door neighbor's son's truck. Sor...
April 09, 2009
2003 Dodge Ram 1500 Truck 5.7L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1D7HA16D13
P0304: Cylinder 4 Misfire Detected. ... pretty unfamiliar with this particular system and that I'm not able to devote the time I should be to troubleshooting this vehicle. I run a 1 man shop and I have a hard time making this vehicle a prioroity, but it's my next door neighbor's son's truck. Sor...
April 10, 2009
1998 Ford Ranger Splash 4.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FTYR14X3W
P0304: cylinder 4 misfire. hello to all! i have this 98 ranger that came into my shop with poor idle and check engine light on, pulled codes for misfire on cylinders 3 and 4. misfire is there all the time under all loads. checked for spark and I do have spark at both cylinders. pulled N...
April 16, 2009
2002 Mercedes-Benz CL600 5.8L Misfire VIN: WDBPJ78J02
P0304: cyl 4. PERFORMED OIL CHANGE ON THIS VEHICLE A FEW DAYS AGO. CUSTOMER RETURNED WITH OIL LEAKING FROM OIL FILLER CAP. IF THE OIL FILLER CAP IS TURNED SLIGHTLY PAST THE LOCKING POSITION, IT WILL COCK THE SEAL AND CAUSE OIL TO LEAK OUT UNDER ACCELERATION. CLEANED AREA O...
April 20, 2009
2006 Ford Fusion SEL 3.0L Misfire VIN: 3FAHP08166
P0304: Misfire cylinder 4. Hey Ford guys: I have an 06 Fusion 3.0 DOHC with a steady miss at idle on cylinders 4 & 6. See repair history for how we got there. Doesn't miss off idle, but the engine makes a loud random klanking noises under accel, like the timing chain is loosing tens...
April 27, 2009
2002 Chevrolet Astro LS 4.3L Misfire VIN: 1GNEL19X82
P0304: cylinder 4 misfire. greetings to all this astro van had come in for misfire codes.started doing some testing and i saw cylinder 4 misfiring while watching my misfire counters.i swapped plugs and wires with cyl2 and the mis stayed acylinder 4.i proceeded to do a compression test o...
April 28, 2009
2002 Honda Civic EX 1.7L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1HGEM21932
P0304: misfire cyl 4. veh came in had 303 misfire code. checked plugs had autolites in so we installed ngk's. found no other problems at that time. customer came back had 303, 302, misfires. so we current ramped injectors foound the pintle hump to be gone or just barely noticeable....
April 29, 2009
2000 Acura TL 3.2L Stall, Misfire VIN: 19UUA5663Y
P0304: Cylinder 4 Misfire Detected. Help Acura Techs! This TL has got us chasing our tails. The vehicle will start and run well cold but if left sitting and idling once it is hot it will stumble very slightly on the first throttle application. Once shut off and restarted hot (15+ minutes) it wil...
April 30, 2009
2004 Ford F-150 FX4 5.4L Misfire, MIL Lamp on, Pinging VIN: 1FTPW14524
P0304: Cylinder 4 Misfire. Have fought this one for three weeks, please help. The truck runs fine until it shifts into overdrive at about 55 to 60 mph. Then it starts pinging, then starts missing, then the computer shuts off cylinder 4 injector. This obviously makes it miss badly and th...
April 30, 2009
2004 Mazda Miata 1.8L Misfire VIN: JM1NB33244
P0304: Cylinder 4 Misfire Detected. ... idle miss that sets P0304. Idles like a dead hole. Off idle it seems fine.Runs great down the road. When warmed up the idle miss completely (almost) goes away. If you clear the code when hot, it will not reset until the car sits and gets cold. As stated in...
April 30, 2009
2002 Volkswagen Beetle Sport 1.8L Misfire, MIL Lamp on VIN: 3VWED21C62
P0304: 4 miss fire. This car has a miss fire only when cold. Will start up and idle well however right after you rev it you can watch the miss fires on all cylinders in the data blocks. It has no overheating concerns although I may need to test drive it in different conditions. ...
April 30, 2009