P0304 Code A Journey to Diagnostic Enlightenment

after changing them all, started my truck same code, same misfiring at low idle. went back to the place of tune up to have them recheck the ... The P0304 code indicates a cylinder 4 misfire. A faulty spark plug or ignition coil is certainly a possibility. Have you removed the #4 spark plug or ignition ... How to fix P0304 Code: Cylinder 4 Misfire Detected Spark Inline Tester Tool https://amzn.to/465UWj7 An engine misfire is when a cylinder has ... I think it was the selection of a looser interference fit on the valve seats for easier construction, and poor valve locks. Overheating the ... it's a good idea to replace both sets of gaskets at same time, the old gaskets get crushed a bit. Air leak from bad intake manifold seal can ... The P0304 error code indicates that the engine control module (ECM) has detected a misfire in cylinder 4. OBD-II diagnostic trouble code p0304 means "Cylinder 4 Misfire Detected". This means your cars engine combustion reaction isn't correct in Cylinder 4. Hi All, I'm getting a P0304 code on my 2008 Rav 8. I had recently changed the spark plugs so the spark plugs should be good. The P0304 error code indicates that the number four cylinder specifically is failing to fire. P0304 is for cylinder 4 misfire. That would be my next step. You don't have to change all the ignition coils out. Just the one for cylinder 4.