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  1. 4.6L V8 Specific Topics
    Doing work on a 98 F150 4.6L. Truck idle horribly, drop it in gear and it gets horribly worse to the point it wants to cut off but doesn't. No power up hills. Backfires occasionally. Acceleration shakes and rattles, but once you let off the gas it calms down and is fine until at idle rpm then...
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