2014 ISX starts then dies re-starts and runs

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by crewman767, Nov 26, 2020.

  1. crewman767

    crewman767 Bobtail Member

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    Aug 10, 2018
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    Hi Guys got a problem I have been chasing for a few months now,
    the truck is a 2014 KW T660 with the Cummins ISX engine.

    It will start first thing in the morning run for +/- 40 seconds then dies.
    It will restart after cranking on it for about 20-30 seconds, but acts like its a cold start, with the smoke and so on, it will smooth out real quick and then run all day long with out a problem.

    we had it in the shop, they put in new batteries, replaced 3 injectors ( claimed they where bad), but still have the problem.

    Has any one ever experianced a similar problem ? any suggestions?

    thank you
     
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  3. lester

    lester Road Train Member

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    Does that have an electric lift pump? Maybe wouldn't call it a lift pump but electronic non the less
     
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  4. Goodysnap

    Goodysnap Road Train Member

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    I would be checking the fuel system. Sounds like either drain back or air entrapment that only occurs when setting. Once running the pumps overcome the issue and can supply enough fuel demand.

    The engine does have a lift pump but is only needed for priming. Once the system is primed it is not used. The pump runs for 2 minutes only at key on.

    First stop, check fuel filters and installation for proper installation and part number. If you have a Davco frame mounted theres a check ball in the fuel inlet to prevent drainback. Look for fuel leaks or wet lines that may indicate air entering the fuel system on the suction side.

    Any faults logged or CEL when this occurs?
     
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  5. crewman767

    crewman767 Bobtail Member

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    Aug 10, 2018
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    Thank you, No faults
     
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