What is misfire?
What is misfire? An engine misfire is when one or more cylinders doesn't produce power, and there are several possible causes, from a fouled spark plug to a clogged fuel injector or faulty oxygen sensor. Misfires can occur when an engine is cold or warm, and they can occur intermittently. When to ignore a trouble code for a misfire? When retrieving trouble codes, only consider related codes to a specific misfire problem, like an ignition coil failure code. If a trouble code is present and doesn't pertain to the immediate problem like an EVAP code, ignore it until a later...