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P0304 Diagnostic Trouble Code Discussion for June 2016

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2001 Chevrolet S10 4.3L Misfire
P0304: Cylinder 4 Misfire Detected. Hi, I'm trying to help a friend out. He has this 01 S10 that will miss on cyl #4 on a small hill with the TCC locked up. They have done a Full tune with NAPA parts, updated injector unit, PCM & a new MAF. It feels like a typical ignition misfire. I ran a c...
June 06, 2016
2012 Honda Civic LX 1.8L Misfire VIN: 2HGFB2E43C
P0304: 4 misfire. ... rev limiter, it will set P0300, P0301, or P0304. P0301 is the most common to return. Power is then extremely limited, and the misfire can be felt at idle. Data will show either cylinder #1 ...
June 21, 2016
2004 Volkswagen Jetta GL 2.0L Misfire, MIL Lamp on VIN: 3VWRA69M94
P0304: Cylinder 4 misfire. After engine rebuild has misfires. Checked timing marks according to mitchell and identifix they all line up correctly. On lab scope crank sensor and cam sensor seem to be ok. Scoped coil checked fine. Engine vacuum is at 15" late timing.
June 23, 2016
2004 Volkswagen Jetta GL 2.0L Misfire, MIL Lamp on VIN: 3VWRA69M94
P0304: Cylinder 4 misfire. After engine rebuild has misfires. Checked timing marks according to mitchell and identifix they all line up correctly. On lab scope crank sensor and cam sensor seem to be ok. Scoped coil checked fine. Engine vacuum is at 15" late timing.
June 24, 2016