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Re: '99 F150 4.2L Backfire through Intake
Posted to Technical Discussion Forum on 9/8/2014 1 Reply

Eddie

Might double check the coil because if I remember correctly there were 3 different coils depending on the year of mfg. Possibly that the plug wires on the coils are different depending on the year also.? (Slept a lot since then) So that might be wrong.... Login to read more.

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