Originally posted by Shinesintx
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Any Ford mechanics on board...misfiring issue
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Originally posted by Huntindad View PostI'm leaning that way. Wonder about the plugs. Might as ell replace those as well. I hope that is all it is.
Be VERY thankful it's an '02.....trust me....that'll be a breeze compared to the 3vLast edited by Slicefixer; 12-08-2019, 10:33 PM.
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Originally posted by TFord250 View PostBe careful with #7 or #8...back passenger. Plug socket, torch and luck. Grit your teeth and stick your tongue out to the left....maybe it’s the right. Albeit, it’s a proven method.
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Originally posted by TFord250 View PostYou sir are correct.
It’s #4 that is always the burden.
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Change all plugs and coil packs and run heavier weight oil. 15w-40 in winter and 20w-50 in summer.
The cam position sensors rely on oil pressure to move and when there’s not enough it will not return to idle position and run smoothly. Run heavier oil to overcome worn seals and regain the lost pressure
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I had a 99 5.4 and after 100k miles i replaced 3 of them one at a time as they went bad. Finally just replaced all of them and spark plugs at once with new. I'd stick with motorcraft parts and make sure to gap the spark plugs like they should be. My truck would misfire too like that when a coil pack was bad under a light load. They're very finicky
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