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P0304 Diagnostic Trouble Code Discussion for June 2008

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2000 Audi A6 Quattro 2.7L Misfire, MIL Lamp on VIN: WAUED54B6Y
P0304: cylinder 4 misfire detected. audi tech, please help. car came in with 11 trouble codes, left side coils (cylinder 4,5 &6)all contanimed by oil. replace valve cover gasket, coils, spark plug connector, plugs. now only cylinder #4 misfire. vagcom misfire counts about 45 on block value 1...
June 03, 2008
1998 Volvo S70 2.4L MIL Lamp on VIN: YV1LS576W1
P0304: misfiore cyl 4. This car has ongoing MIL, Misfire cylinder 2, 4, and 5. No driveability issues detectable. When codes are cleared will repeat same codes on test drive. I found the fuel filter fairly restricted and replaced fuel filter with factory filter, no change. Performed...
June 04, 2008
2000 Lincoln Continental 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1LNM97V4YY
P0304: cylinder 4 miss-fire. customer started vehical & miss fire was there. checked spark, check injector pulse, fuel pressure is 54psi. & holding.i also switch coils. pulled spark plugs fuel soaked. did a compression test cylinder 4 120psi. cylinder 5 0psi. i can see that no com...
June 05, 2008
1999 Mercury Villager (Van) 3.3L No Start, Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 4MZXV11T6X
P0304: cam sensor. thanks in advance for any and all help the van is a strange one came with complant of not idleing correctly got into shop and running a little bad noticed all the new parts and called to see what all was done listed in related history so took on a test drive r...
June 05, 2008
2000 Lincoln Continental 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1LNM97V4YY
P0304: cylinder 4 miss-fire. customer started vehical & miss fire was there. checked spark, check injector pulse, fuel pressure is 54psi. & holding.i also switch coils. pulled spark plugs fuel soaked. did a compression test cylinder 4 120psi. cylinder 5 0psi. i can see that no com...
June 06, 2008
2001 Volkswagen Beetle GLX 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3VWDD21C81
P0304: . Hi guys this is my first post on iatn and it's driving me crazy, i got it from another shop, they replace coils, spark plugs, mass air flow. The problem is after sitting over night or for long period of time firts 10 sec it will misfire i conect my launch and ...
June 06, 2008
2003 Mini Cooper 1.6L Misfire, MIL Lamp on VIN: WMWRC33453
P0304: Missfire 4. ... Noticeable roughness & audible miss sound at tailpipe. Exhaust temp approx 100deg lower at #4 header tube. Elevated HC at idle (approx 300ppm) Ignition & compression -ok-. No apparent vacuum leak. P2097 This is supposed to be a two trip code but th...
June 08, 2008
2000 Mercury Mountaineer 5.0L Misfire, MIL Lamp on VIN: 4M2ZU86P5Y
P0304: missfire cylinder 4. hello ford techs. this suv came in for over drive light flashing...while road testing engine started missing on cyl.8 found bad injector replaced with new one. cleared codes and test drove again this time eng. is missing on cyl.1 and 4 recheck everthing again....
June 10, 2008
2007 Ford Focus SE 2.0L Hesitation, Misfire, MIL Lamp on VIN: WF0FAKEVIN
P0304: missfire cyl 4. Note veichle only has 9,000Km's on the clock. Customer reported engine lacks power and missfires. Found code for missfire cyl 4. Drove veichle found missfire evident on medium accel when hot or cold. Cleared code, swapped coil #4 with coil #1 and spark plug #...
June 20, 2008
2007 Ford Focus SE 2.0L Hesitation, Misfire, MIL Lamp on VIN: WF0FAKEVIN
P0304: missfire cyl 4. Note veichle only has 9,000Km's on the clock. Customer reported engine lacks power and missfires. Found code for missfire cyl 4. Drove veichle found missfire evident on medium accel when hot or cold. Cleared code, swapped coil #4 with coil #1 and spark plug #...
June 23, 2008
2000 Audi A6 Quattro 2.7L Misfire, MIL Lamp on VIN: WAUED54B6Y
P0304: cylinder 4 misfire detected. audi tech, please help. car came in with 11 trouble codes, left side coils (cylinder 4,5 &6)all contanimed by oil. replace valve cover gasket, coils, spark plug connector, plugs. now only cylinder #4 misfire. vagcom misfire counts about 45 on block value 1...
June 03, 2008
1998 Volvo S70 2.4L MIL Lamp on VIN: YV1LS576W1
P0304: misfiore cyl 4. This car has ongoing MIL, Misfire cylinder 2, 4, and 5. No driveability issues detectable. When codes are cleared will repeat same codes on test drive. I found the fuel filter fairly restricted and replaced fuel filter with factory filter, no change. Performed...
June 04, 2008
2000 Lincoln Continental 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1LNM97V4YY
P0304: cylinder 4 miss-fire. customer started vehical & miss fire was there. checked spark, check injector pulse, fuel pressure is 54psi. & holding.i also switch coils. pulled spark plugs fuel soaked. did a compression test cylinder 4 120psi. cylinder 5 0psi. i can see that no com...
June 05, 2008
1999 Mercury Villager (Van) 3.3L No Start, Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 4MZXV11T6X
P0304: cam sensor. thanks in advance for any and all help the van is a strange one came with complant of not idleing correctly got into shop and running a little bad noticed all the new parts and called to see what all was done listed in related history so took on a test drive r...
June 05, 2008
2000 Lincoln Continental 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1LNM97V4YY
P0304: cylinder 4 miss-fire. customer started vehical & miss fire was there. checked spark, check injector pulse, fuel pressure is 54psi. & holding.i also switch coils. pulled spark plugs fuel soaked. did a compression test cylinder 4 120psi. cylinder 5 0psi. i can see that no com...
June 06, 2008
2001 Volkswagen Beetle GLX 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3VWDD21C81
P0304: . Hi guys this is my first post on iatn and it's driving me crazy, i got it from another shop, they replace coils, spark plugs, mass air flow. The problem is after sitting over night or for long period of time firts 10 sec it will misfire i conect my launch and ...
June 06, 2008
2003 Mini Cooper 1.6L Misfire, MIL Lamp on VIN: WMWRC33453
P0304: Missfire 4. ... Noticeable roughness & audible miss sound at tailpipe. Exhaust temp approx 100deg lower at #4 header tube. Elevated HC at idle (approx 300ppm) Ignition & compression -ok-. No apparent vacuum leak. P2097 This is supposed to be a two trip code but th...
June 08, 2008
2000 Mercury Mountaineer 5.0L Misfire, MIL Lamp on VIN: 4M2ZU86P5Y
P0304: missfire cylinder 4. hello ford techs. this suv came in for over drive light flashing...while road testing engine started missing on cyl.8 found bad injector replaced with new one. cleared codes and test drove again this time eng. is missing on cyl.1 and 4 recheck everthing again....
June 10, 2008
2007 Ford Focus SE 2.0L Hesitation, Misfire, MIL Lamp on VIN: WF0FAKEVIN
P0304: missfire cyl 4. Note veichle only has 9,000Km's on the clock. Customer reported engine lacks power and missfires. Found code for missfire cyl 4. Drove veichle found missfire evident on medium accel when hot or cold. Cleared code, swapped coil #4 with coil #1 and spark plug #...
June 20, 2008
2007 Ford Focus SE 2.0L Hesitation, Misfire, MIL Lamp on VIN: WF0FAKEVIN
P0304: missfire cyl 4. Note veichle only has 9,000Km's on the clock. Customer reported engine lacks power and missfires. Found code for missfire cyl 4. Drove veichle found missfire evident on medium accel when hot or cold. Cleared code, swapped coil #4 with coil #1 and spark plug #...
June 23, 2008