4.6 coil pack
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Brew, I think the OP has COPs. He said that it broke after the spark plug blew out of the hole, which is common on the COPs, but would be pretty unusual for the coil packs. Since he disconnected the fuel rail, I'd probably start there, like another poster said, checking fuel pressure, wiring to the injectors, etc.
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Thanks man im glad i got that straightend out...so my truck has COPs. My buddies 99 f150 4x4 4.6 has wires. Is there really any advantage to the COPs or the wires ?? oh and my truck does have the PI heads i always brag to my buddie who has the 99 that i got about 13 hp on him and 28 ft lbs not that thats much but anyway lol.
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