Question about 2000 Ford Expedition
This is what I do when I have a miss on one cylinder with a coil-on-plug ignition system: Take the coil off of the suspect cylinder, and remove the plug. If you see no obvious problems with these 2 parts, swap each with another in a different cylinder, paying close attention to where you moved them to. For example: move #7 plug to #5, and #7 coil to #3. Now run the engine and see which cylinder has the misfire. If it moved to #3, you have a bad coil. If it moved to #5, the plug is bad - replace them all unless they are very new. To replacce the plugs, remove each coil and you can access the plug beneath with a standard spark plug socket and extension. Good luck!
Posted on Jun 28, 2009
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Posted on Jan 02, 2017
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