Question about 1998 Ford F150 Regular Cab

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New plugs an wires,coilpak what else could

New plugs an wires,coilpak what else could misfire on multp. cyls.

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This is the only possible ideas I can thing of :

Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues

I know you did these two things:
Faulty spark plugs
Faulty coil or related wiring

Posted on Apr 14, 2009

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