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2004 Expedition Spit a Spark Plug


jmac760

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Ok did the Google. Looks like there is a class action suit out there. Unfortunately my truck missed it by a year.....

 

Ford Models included in the Ford Spark Plug Class Action Lawsuit

The “class” for this lawsuit would include owners of the following Ford, Lincoln and Mercury models:

Ford

  • 2005-2008 Mustang
  • 2004-2008 F-150
  • 2005-2008 Expedition, F-Super Duty
  • 2006-2008 Explorer
  • F-53 Motorhome Chassis
  • 2007-2008 Explorer Sport Trac

Lincoln

  • 2005-2008 Navigator
  • 2006-2008 Mark LT

Mercury

  • 2006-2008 Mountaineer
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Yes, they were replaced periodically. Probably not as often as I should have. Other real problem was my trany died at about 110K and again at about 150K. First one hurt, but second time was still under warranty from the trany manufacturer.

What usually happens is that since there is an extended nose on the body of the sparkplug between the threads and where the electrode is attached, carbon deposits build up there and when you screw the old plug out, those deposits will damage the threads in the aluminum heads resulting in lower thread contact to keep the plug in place...eventually, the thread bore will fail and the plug gets pushed (or spit) out during the compression stroke....sometimes, the electrode shell breaks off too...the head/plug design has since been upgraded to eliminate that problem and an entire cottage industry has grown up around the repairs of these damaged thread bores...

 

ford_motorcraft_pzt_2fe_spark_plug.jpg

 

Here is a video from Time-Sert explaining their product....good luck!

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