Misfire on my manual 98 f-250 4.6

Discussion in 'F-250 and F-350 General Tech and Info' started by FIFTY1FIFTY, Nov 7, 2013.

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  1. Nov 7, 2013 at 12:17 PM #1
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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    I've replaced the plugs,wires,and the coil packs and it's still not running right. Any suggestions?


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  2. Nov 7, 2013 at 12:24 PM #2
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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    It's at 208,000 miles


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  3. Nov 7, 2013 at 5:39 PM #3
    iowaredneck

    iowaredneck Administrator

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    Any codes showing
     
  4. Nov 7, 2013 at 5:52 PM #4
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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  5. Nov 7, 2013 at 5:53 PM #5
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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  6. Nov 7, 2013 at 5:54 PM #6
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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  7. Nov 7, 2013 at 5:55 PM #7
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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  8. Nov 7, 2013 at 5:59 PM #8
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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    Sorry for all the separate pics


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  9. Nov 7, 2013 at 6:34 PM #9
    Pity7700

    Pity7700 oh umm...uhh?

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    holy cow.

    did you have this trouble before you changed the plugs wires and coils? have you taken the IAC off to clean it?

    not sure how the EGR is getting insufficient flow unless its caked with carbon or the exhaust is coming out before it can recirculate? that's all steel hosing though I believe. have you checked for a vacuum leak around any rubber hoses? might have to focus on one thin at a time.
     
    Last edited: Nov 7, 2013
  10. Nov 7, 2013 at 7:03 PM #10
    FIFTY1FIFTY

    FIFTY1FIFTY Junior Member

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    IAC? I haven't checked any of the hoses. I figured it couldn't be that easy. Not my luck lol


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