Posts Tagged: Engine misfire code

How to Diagnose and Fix Engine Misfire Code

Fix a misfire trouble code What causes a misfire trouble code? Here are the most common causes of a cylinder misfire, in order of priority • #1 Cause is worn spark plugs — A worn spark plug has too wide a gap. That causes a weak spark or no spark • Fouled spark plug— Excessive carbon buildup from worn piston rings or a rich fuel mixture and cause a spark plug to misfire • Faulty ignition coil — Driving too long on a misfiring spark plug causes the ignition coil … Read More