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P0304 Diagnostic Trouble Code Discussion for May 2014

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2003 Honda Pilot EX 3.5L Misfire VIN: 2HKYF185X3
P0304: Cylinder 4 Misfire Detected. I cannot get rid of this vehicles misfire. New plugs and coils when vehicle came in initially misfiring, was gone a few weeks then back in for misfires on 3 and 6. moved coils around and cleaned EGR passageways (almost completely plugged), vehicle back again, ...
May 01, 2014
2005 Mercedes-Benz CLK320 3.2L Misfire VIN: WDBTK65J95
P0304: cyl 4 misfire. car started cold replaced crank sensor test drive. confirmed crank sensor fixed no start issue. proceeded to egr traced to bad vacuum tranducer replaced egr tranducer assembly test new one with snap on egr acuation on verus. no click at tranducer test power at...
May 03, 2014
2004 Honda Civic GX 1.7L Surge, Misfire VIN: 1HGEN26524
P0304: Cylinder 4 Misfire Detected. This is a car that is giving me very bad problems. it idles well but under a load at any temperature, it will start to misfire. it will throw all of the codes mentioned and do it within 1/4 mile. We adjusted the valves. no difference. ran an in cylinder compre...
May 05, 2014
2005 Mercedes-Benz CLK320 3.2L Misfire VIN: WDBTK65J95
P0304: cyl 4 misfire. car started cold replaced crank sensor test drive. confirmed crank sensor fixed no start issue. proceeded to egr traced to bad vacuum tranducer replaced egr tranducer assembly test new one with snap on egr acuation on verus. no click at tranducer test power at...
May 05, 2014
1999 Subaru Legacy Limited 30th Anniversary 2.5L Cuts out, decreasing power VIN: 4S3BG6856X
P0304: Cylinder 4 Misfire Detected. Hello all, This one is a bit of a head scratcher. The shop had done head gaskets on this vehicle with the related repair history and all was well for about 2 weeks. Then it started running rough under load, but idled fine. The short term fuel trim drops to -1...
May 07, 2014