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1999 Ford F-250 Super Duty Question: My truck runs great until it gets into a hard pull.then it starts splutting .

 

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liz2010, 6.8L V10, Ashburn, VA, July 01, 2014, 08:46
 Rookie

It straightening out it doesn't do this all the time.

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    DonziGT230 July 01, 2014, 17:21
     Journeyman

    Check fuel pressure under load if you can. If the fuel filter hasn't been replaced recently you could try that, it sounds like a fuel supply issue.

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  • Answer #2

    Katzman Automotive from Katzman Automotive & Transmissions, July 11, 2014, 10:23
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     Technician

    Is the check engine light flashing on and off when this is happening? If it is, then you have a serious misfire. If the check engine light is on, but not flashing, it could still be a misfire or something else like a fuel issue, but you should get the codes scanned to point you in the right direction.

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