Mechanics

SPARK PLUGS BURN RED

2007 Ford Expedition • 10,300 miles

What could be wrong if spark plugs burn red and then burn out and car misses on pull in ford expedition 2007 5.4L engine spark plugs have been replaced three times and coil pack replaced once. Only misses in a pull
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Frostgang
April 24, 2012.




They could be running too lean causing the overheating of the plugs. Get a shop to monitor fuel delivery and the injector on times as well as the short and long term trims.

Roy

ASEMaster6371
Apr 24, 2012.


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