P0300 Engine Misfire Common Causes

A common reason for misfires, hesitation, and stumble is a corroded ignition coil and/or plug wire. This example is from a 3.1L, 3.4L and 3.8L engine.

This is what the coil towers should look like.

A good ignition coil makes engine run smooth and no hesitation

Corrosion on this ignition coil and spark plug wire will cause misfires under hard acceleration, or when cruising at a steady speed (45-65 mph) then accelerating to pass. Engine will also misfire at idle on wet, damp mornings. Causes a check engine light code p0300.

Corroded ignition coil and spark plug wire causes misfire code p0300

What can cause my coil to not have any fire after i replaced the engine.
 Well that depends on the car and engine. Changing the engine would have nothing to do with it unless you did not, or hooked something up incorrectly.

Ask A Question For FREE. No Login Required.

Q and A Main

How Things Work