5.9 starting help

Discussion in 'Tech Info' started by B1gch1n0, Nov 27, 2016.

  1. B1gch1n0

    B1gch1n0 Junior Member

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    I just bought I 98 5.9 cummins turbo diesel truck. When you walk out to the truck first thing in the morning or after sitting for a while. I put the key in give it some time for flow plugs to warm up and then it fires right up really quick! Cool no problems! Now if I drive to the store turn it off shop for idk 20 min come out it takes a while of cranking to turn over. Some times does not want to run at all!? What could be the problem what do I need to do? Any help would be great thanks
     
  2. dapepper9

    dapepper9 Senior Member

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    Cummins don't have glow plugs. Instead they use a grid heater but it works to do a similar function but from outside the cylinder.

    Have you tried following the same procedure yout do in the mornings?
     
  3. B1gch1n0

    B1gch1n0 Junior Member

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    Yes I have. I do the same procedure always. And thank you for letting me know about the grid heater. Do I still need to let warm up like glow plugs?
     
  4. dudeman2009

    dudeman2009 Senior Member

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    Both 12v and 24v Cummins will do this when the injection pump starts going bad. Moreso on the 24v with the VP-44 pumps. Keep a bottle of cold water on hand, when it has a hard start, drench the injection pump and try it again. If it starts up fine, then thats likely the culprit.

    Is there a lot of smoke on startup?
     
  5. B1gch1n0

    B1gch1n0 Junior Member

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    No I can't remember seeing smoke when it starts. But thank you for the info.


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