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P0304 Diagnostic Trouble Code Discussion for October 2012

Cylinder 4 Misfire Detected

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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2006 Volkswagen Jetta 2.5 2.5L Misfire VIN: 3VWSF31K36
This vehicle came in running rough at idle, misfing at cruise. Replaced valve cover cause 15" vacuum at dipstick tube, traced to breather failure, but still misfire at cruise. Suspect timing chain issue, Checked Block 093,channel four, should be 0 degrees ...
October 09, 2012
2003 Jeep Liberty Sport 3.7L MIL Lamp on, indicated misfire VIN: 1J4GL48K73
P0304: Cylinder 4 Misfire Detected. Hi guys, I have an difficult one that I may not be approaching in the right way. This Jeep setup has had many problems with misfires due to valvetrain problem. But that being said, the vehicle/engine I am working on seems to runs OK but shows misfires on the m...
October 16, 2012
2003 Ford F-150 King Ranch 5.4L Misfire, MIL Lamp on VIN: 1FTRW07L33
P0304: Cylinder 4 misfire. Hi all, this truck has been in and out of our shop with an intermittent cold start misfire on the #4 cylinder. We replaced the spark plug and coil on #4 thinking this was the reasonable cause. Truck came back in about a week later with the same problem. On col...
October 18, 2012
1999 Dodge Ram 1500 Laramie 5.9L Misfire
P0304: Cyl 4 Misfire. Hi all! Got another one that is currently stumping us and a search on here and google has turned up nothing applicable. This truck is incredibly well taken care of and in great shape. It came in after having all the injectors, plugs, and wires replaced. It mis...
October 26, 2012