P0304 Code Empowering You with Diagnostic Knowledge

Replace the spark plug (don't forget to check/set the gap. Unplug the wiring harness from the old coil pack and plug in the new coil pack. Push ... Check the wires and the pigtail that goes to the coil pack. I've seen this happen from a wire cracking close to the pigtail (not noticeable ... The P0304 code will be seen in cars where the ECU has detected that cylinder 4 is not firing properly. The ECU monitors the operation of all cylinders to ensure ... And switch the ignition coil from cyl4 to cyl2. Still getting misfire on CYL4 ! the car runs normal when i erase code P0304 but then it comes ... A friendly local garage pulled codes, P0302 and P0304, cylinder misfires. We erased. Switched plug wires around to assess. Ran for check engine light, and ... hi to all i have a 2002 VW Passat estate 2.0. i recently had the code p0304 come up misfire cylinder 4 and replaced the plug furthest away ... I think it was the selection of a looser interference fit on the valve seats for easier construction, and poor valve locks. Overheating the ... I recently got a 2002 grand prix 3.8l non supercharged. Ive been getting a engine misfire code p0300 and p0304. Ive changed out plugs and wires, put in new ... Looks like a misfiring on cylinder #4. Bad coil, spark plug, intake leak? All the usual suspects. I would clear it and see if it comes back. It's mean that you have misfire in cylinder number 4. It could happen because of problem with wiring, connectors, bad spark plug, ignition coil, ...