hi everone! just registered and I already have a mechanical question. My pickup started to hesitate and after awhile it felt like it was running on 5cylinders rather than 8. It has a 5 l vortec engine and I have since replaced the plugs, wires and fuel filter but it still chugs and grunts with no pick-up. Any suggestions at what the problem and/or solution is, Pleeeeeaasse give me a hint.
thanks Ditto1