P0304 Diagnostic Trouble Code Discussion for May 2023
Cylinder 4 Misfire Detected
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| Help Request | Posted | |
| 2013 Mercedes-Benz CLS550 4.7L Poor Idle Quality, Misfire P0304: . Hi All, car has misfire bank one, replaced coils , plugs and O2 sensors bank one, no change. Checked upstream lambda and scanner shows bank 2 off, injectors 12&4 are in high positive range in smoothness test. sometimes misfire switches from 2 to cylind... |
May 01, 2023 | |
| 2013 Mercedes-Benz CLS550 4.7L Poor Idle Quality, Misfire P0304: . Hi All, car has misfire bank one, replaced coils , plugs and O2 sensors bank one, no change. Checked upstream lambda and scanner shows bank 2 off, injectors 12&4 are in high positive range in smoothness test. sometimes misfire switches from 2 to cylind... |
May 02, 2023 | |
| 2011 BMW 128i 3.0L Poor Idle Quality, Misfire VIN: WBAUP7C52B P0304: misfire cyl 4. Car has extremely rough idle. Misfires on bank2 cyl 4-6. Above idle car runs smoothly and appears to have good power. When valvetronic sensor is unplugged car will run great. The valve cover has been removed and everything inspected very closely. No worn l... |
May 18, 2023 | |
| 2011 BMW 128i 3.0L Poor Idle Quality, Misfire VIN: WBAUP7C52B P0304: misfire cyl 4. Car has extremely rough idle. Misfires on bank2 cyl 4-6. Above idle car runs smoothly and appears to have good power. When valvetronic sensor is unplugged car will run great. The valve cover has been removed and everything inspected very closely. No worn l... |
May 19, 2023 |
