P0300 Code The Definitive Troubleshooting Guide for Engine Woes

0300 is misfire. You changed the plugs. Bad plug, damaged plug wire (yanked off by wire and not boot), cracked plug, not connected at coil. Most likely a fuel injection issue. You'll need to run a diagnostic scan on it. It would also be wise to check fuel pressure and a multi-cylinder compression ... The CEL should illuminate when the key is turned ON before the engine is started. That's a check to be sure the light still works. The most likely cause of the misfire is a coil pack going south... this can cause a P0300 code to be recorded. A failing coil pack on these ... They can be caused by ignition system problems, fuel system problems, or mechanical problems. Code P0300 often appears with other fault codes ... A P0300 is called a random misfire, but often there is only one offending cylinder. The real meaning of P0300 is “ I'm detecting misfires, but the count rate ... The manual say it could be one of the following: fault - spark plug coil wire vacuum leak injector fault low/high fuel pressure A lot of possibilities. The P0300 code is for a random misfire. A tune-up might help but I doubt it. It never hurts to put a new set of plugs in. However, random ... Engine misfire. How to fix a random misfire in your car DIY with Scotty Kilmer. How to stop random engine misfire code P0300 with check ... DTC P0300 is for random/multiple misfires. I would make sure you've got good fuel and have the spark plugs inspected.