Complaint: Misfire
Codes: P0300, P0305
Diagnosis: Only getting 5 to 6 counts of misfire per minute. Does not change with higher RPM or when vehicle is in gear.
Found spark plug wire number 5 is arcing which was the cause of the misfire. The reason why P0300 came on because the spark plug wire 6 is also arcing but not bad enough to register a misfire code.
Repair: Replaced spark plug wires
![](https://i.ytimg.com/vi/cdYpdEix8fE/mqdefault.jpg)