P0300 Random Misfire: What Causes It and How to Find It
Why a random misfire code almost always points at something every cylinder shares, how the ECU detects it, and the order to check things in.
AutoScan journal
spark plugs — Fault codes explained properly, what each one usually costs to put right, and how to check it yourself before anyone quotes you.
Why a random misfire code almost always points at something every cylinder shares, how the ECU detects it, and the order to check things in.