Do you have the firing order correct?
Misfire running rough after coil and plug change
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Good guess and the 4.6l is a COP design. The primary wiring is not long enough to reach other cylinders.
However do check that the conectors to the coils are fully engaged. Same with coils on top of the plugs.
The underside of the hood will have a sticker with an engine vacuum diagram.
If that is not sufficient, attached is a publication from Ford. Says electrical and that is how I would search. Has all vacuum routing as well.
I could not find a vacuum hose routing on the net.
With that kind of mileage, I would replace O2 sensors if that has not been done in the last 100,000 miles.
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![Publication Rectangle Book Font Book cover]()
However do check that the conectors to the coils are fully engaged. Same with coils on top of the plugs.
The underside of the hood will have a sticker with an engine vacuum diagram.
If that is not sufficient, attached is a publication from Ford. Says electrical and that is how I would search. Has all vacuum routing as well.
I could not find a vacuum hose routing on the net.
With that kind of mileage, I would replace O2 sensors if that has not been done in the last 100,000 miles.
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