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Fleabit peanut monkey
Join Date: Nov 2007
Location: North Canton, Ohio
Posts: 20,862
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2003 Navigator - Plug wear consistent pattern
2003 Navigator 5.4 Engine. 125k Title should be inconsistent wear.
Changing plugs and coil over plugs. General PITA but doable with a few tears.
Factory gap - 52-56 thousandths. As I move to the back of the engine pulling plugs, they are 70 thousandths in front and move up to 95 thousandths in the rear on pass side. Driver's rear is 87 thousandths. Almost linear in progression.
Heat related?
I have seen gaps of 125 on clapped out Windstars. They can run with fat gaps, but why the non-uniform wear?
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1981 911SC Targa
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