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Motorcraft Finewire platinum spark plugs

2512 Views 4 Replies 3 Participants Last post by  chikoo
I replaced the factory spark plugs at 75K with the Motorcraft Finewire platinum spark plugs. At 109K they were bust....all burned down.

Is that how much they are supposed to last?


Will post pictures if you need it.
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To me it looks like they just need to have the carbon cleaned off them. Have you checked to see what's under all the soot on the center electrode? Is it actually worn away or just covered in crud?
1 - 1 of 5 Posts
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