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If you have determined that your ignition system is operating correctly, there may be a problem within your fuel system that is causing the random misfires.Replace spark plugs and wires if needed and recheck for misfires.
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Worn and old spark plug wires are common causes of random misfires.
![ford engine codes po302 ford engine codes po302](https://www.myautorepairadvice.com/images/spark_plug_closeup.jpg)
Look for loose engine ground wires as well. Check for loose connectors at the ignition coils or for damaged wiring.If other codes are present, they must be addressed first.
Ford engine codes po302 code#
Use FIXD to scan your Ford to verify P0300 is the only code present.Tools You May Need (FIXD’s Top Picks From Amazon):.Loose fitting electrical connectors and broken or disconnected vacuum hoses are often overlooked. > RELATED: Average cost to replace spark plugsįord code P0300 common diagnosis mistakes The most common reason for engine code P0300 is faulty or worn spark plugs and/or spark plug wires or coils. Poor quality fuel that is old or contaminated.Camshaft and/or crankshaft sensor defective.Ignition issues, including failing or damaged ignition coils.Faulty or worn spark plugs and/or spark plug wires.The most common reason for this to happen is faulty or worn-out spark plug coil packs, especially if it’s been a while since you had a tune-up. Misfires can be caused by many reasons from a faulty ignition system, fuel system, or internal engine failure.