Join Now
International Automotive Technicians Network

P0304 Diagnostic Trouble Code Discussion for August 2014

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
1996 Dodge Ram 1500 5.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3B7HC13YXT
P0304: cylinder 4 misfire. Pulling my hair out big time... Truck runs amazing cold, but when it heats up to temp, it misses hard. I tried sticking a digital scoping camera into cyl 4 and the valves look fine. Compression check on cylinder 4(135psi) and 6(145psi) are close. Im not sure w...
August 02, 2014
2011 Volkswagen Jetta 2.0L Poor Idle Quality, Misfire, MIL Lamp on, Lack of Power VIN: 3VW2K7AJ1B
P0304: cylinder 4 misfire. Car runs fine with no problems at all until problem occurs. When driving at highway speeds and attempting to accelerate there is a loss of power and EPC illuminates along with MIL. Car will maintain speed but will not accelerate and engine rpm is very high. Wh...
August 05, 2014
2008 Audi A4 Cabriolet 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAUAF48H98
P0304: testing and results. car runs perfect when cold and under load. Live data short term fuel trims within spec when running good, seems to be once warmed up short term fuel trim goes all the way to lean 25. with no obvious vacuum leaks. At that point also car will begin to misfire. I...
August 06, 2014
1996 Dodge Ram 1500 5.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3B7HC13YXT
P0304: cylinder 4 misfire. Pulling my hair out big time... Truck runs amazing cold, but when it heats up to temp, it misses hard. I tried sticking a digital scoping camera into cyl 4 and the valves look fine. Compression check on cylinder 4(135psi) and 6(145psi) are close. Im not sure w...
August 06, 2014
2009 BMW X6 xDrive50i 4.4L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 5UXFG83519
P0304: Cylinder4 misfire detected. ... codes p0300-p0301-p0303-p0304-p0305-p0307 Hesitation and Poor Idle Quality we R/R updated injectors updated coils spark plugs fuel pressure sensor pcm software update after the road test the same misfire code came back we CK the both catalytic converter te...
August 19, 2014
2001 GMC Sierra 1500 SL 4.3L Misfire, MIL Lamp on VIN: 1GTEC14W11
P0304: cylinder 4 misfire detected. hi every body, I have this gmc truck coming from other shop, they replaced all the parts mentioned before, misfire on cylinders 1 & 4 still present, checked compression on all cylinders, there are 145 psi on each, also run a leak down test, all cylinders a...
August 22, 2014
2005 Honda Odyssey Touring 3.5L Misfire VIN: 5FNRL38825
P0304: Cylinder 4 Misfire Detected. Just completed a timing belt, w/p, crank seal & cam seals. Upon first start up the vehicle is misfiring and the check engine light is flashing. Immediately figured the timing is off, no that's not it 100% certain just tore it all back done to confirm that ...
August 27, 2014