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2003 Ford F-150 Question: ignition: possible wiring, or faulty contact

 

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arturo08, 4.6L V8, Blaine, WA, January 05, 2014, 20:40
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 Master

I bought some fuel that had water in it a few weeks back... after cycling out the bad stuff, changing the fuel filter, the spark plugs and the ignition coils.. the truck is still missing in the #2 cylinder. I had 2 second opinions as well as mine... there is n knocking, she still missing. we figured maybe the fuel injector, so I changed it. still missing.
I am going in for a diagnostic run on Wednesday as the only local diagnostic machine is down till then, how ever both my mechanic buddies and I are all kinda stumped. I am thnkin it might be the contact to the ignition coil. I should find out for after the diagnostic, but just curious what your thought's on it might be.

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  • Answer #1

    pushrod January 05, 2014, 23:11
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     Master

    Check for spark with a spark tester, test compression with a gauge, test for injector pulse with a noid light. Which one of those ain't working right?

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    arturo08, January 06, 2014, 00:49
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     Master

    injector is functioning, the compression is still good, but it's the lead to the coil that I suspect.. no spark...

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  • Answer #2

    Greg's Orange Auto (12184 Answers) , Orange, CA - (714) 361-9386
    globalhelper January 06, 2014, 05:47
     Master

    poss wiring at coil

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    arturo08, January 29, 2014, 20:05
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     Master

    turns out the problem was with the computer... drivers to the cylinder failed... solution was to replace the computer...

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