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P0304 Diagnostic Trouble Code Discussion for June 2021

Cylinder 4 Misfire Detected

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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1997 Acura TL 2.5L Misfire VIN: JH4UA2657V
P0304: Cylinder 4 Misfire Detected. Vehicle received with code P0304, confirmed misfire on cylinder 4. Initially swapped plug then wire with Cylinder 3, misfire stayed at cylinder 4. I noticed when I pulled cylinder 4 wire while running sparks were traveling all over distributor cap. So I re...
June 04, 2021
2015 Ford Escape SE 1.6L Misfire VIN: 1FMCU0GX4F
P0304: Cylinder 4 misfire detected. This vehicle came in because it died while driving. We found a loose oil filter and found less than a quart of oil in the engine. So we ordered a long block from Ford and installed it. Vehicle left without any issues. This was in February and the vehicle w...
June 12, 2021
1999 Toyota Solara SE 3.0L Poor Idle Quality, Misfire VIN: 2T1CF22P2X
P0304: Cylinder 4 Misfire Detected. Hi, Toy techs. I have a 99' Solara V6 1MZFE with #4 cylinder misfiring issue. No spark present at #4 cylinder coil (#1 coil) The customer had already replaced spark plugs and wires (NGK) and still misfires. I checked the compression and fuel injectors a...
June 17, 2021