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Discussion Starter · #1 · (Edited)
rough idle, misfire cyl1. have done everything i can think of

i have a 2002 4.6 v8 f 150. i have changed the cops, plugs and injector for cylinder one. the truck is still running rough and using a lot of gas. i am out of ideas of what is wrong ...does any one have some solutions? :confused:
 

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2013 F-150 XLT 4WD with 5L
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The very first thing I would do is have the truck diagnosed for codes. While you can take it to your local parts store and they can read the codes they may not get the right codes as those readers tend to show more than what is really needed (known from personal experience). It is best to take it to the dealership repair shop and let them diagnose the truck. It will probably cost you close to $100 but you will know what is needed and not have to replace this and that until you get to the real issue.
 

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Discussion Starter · #3 ·
unfortunately i've already taken it and had the codes checked. all i get is a misfire in cylinder1.. it is going to the local ford dealer in a couple days. hopefully they will have some idea.
 
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