P0304 Code A Diagnostic Adventure for Automotive Enthusiasts

The code was P0304 Cylinder Misfire. I had the van in for a regular oil change and told them that the light was coming and going, but it wasn't on at the time ... 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 ... The error code is showing a P0304: meaning Cylinder 4 is having missfires. Recommendation is to replace the ignition coil and the spark plug. All of a sudden check engine light comes on. and I get this code. Idle is crap, the car runs very bad. I barely make it home and shut car off. That is the connector for the fuel injector on #4 cylinder. That is the cause of the misfire and your check engine light. Some/ most dealers ... In this video, we explain what OBD2 code P0304 means and possible causes. P0304 means cylinder number 4 is experiencing misfires. A misfire ... The code is showing a misfire on Cylinder 4. The actual code is P0304. I changed the spark plug but that wasn't it. She seems to be running a little rough when ... OBD-II diagnostic trouble code p0304 means "Cylinder 4 Misfire Detected". This means your cars engine combustion reaction isn't correct in Cylinder 4. After running a diagnostic, we have identified the code P0304 - 4th cylinder misfire. After conducting some research I'm finding this a common ... I took it to the dealer on Sept 17, they got the same code and indicated it was a bad coil on cylinder 4 and replaced it and all 6 spark plugs.