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so you have autolite plugs in there now? I would go back to Motorcraft. Sounds like an issue mine had a while back, same symptoms and everything- but new plugs solved it.
did you set the gap @ 0.054"?
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4.2L V6 - M5OD | 16" Dual Efans | 2" Drop Shackles | K&N Series-77 | Port & Polish TB
Bent Frame Mod | Custom Down-Turned Bumper | Accordian-style bed flooring
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