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I have a 1997 ford f150 with a 4.6 in it the trucks odometer stopped running two years ago and it says 256,000 but I replaced the motor and it know only has about 85,000 and I just got the transmission rebiult after telling you guys all that I have been having a problem ith the way the truck has been running under a normal aceleration it would buck and at cruise ing speed it would do the same thing (45-60mph) so I changed the plugs, wires, both coils, air filter, fuel filter i did all this because the check engine like came on and it said #7 cylinder miss fire after I found that out I just changed that plug and wire and coil because I was broke and it ran a little better after I did that it ran a little better then it came up that #3 cylinder miss fired so thats when I changed every thing and it is doing the same thing what do I do please help
What brand parts did you use when you changed the plugs and wires? These engines are pretty sensitive and seem to run best with Motorcraft parts. Good luck!
i have bosch plugs in mine, stick with the motorcraft, its not a huge thing and theres not one particular thing i can put my finger on but it just doesnt run as good with the bosch, my dad put them in when he had it otherwise i would have put in motorcraft, just dont have the time to change them out right now or the money to have someone else do it lol
well a code came up and it said miss fire in cylinder 3 so I changed the injector and got most of everything back to normal but i noticed half way to work when I was stoped it felt like a miss fire once every 10 sec or so do you think I should clean all of my injectors or what thanks for all your help