6.2 diesel probs

Discussion in 'Chevy C/K Truck Forum' started by 83Sub, Nov 20, 2008.

  1. 83Sub

    83Sub New Member

    hey just put a new fuel pump on my suburban its got the 6.2 diesel and not starting should i crack all the injection lines open to prime the engine cause i cranked it over for a while but nothing, it started right up then died and can't get it started again
    Last edited: Nov 20, 2008
  2. 04sierracrewcab

    04sierracrewcab Epic Member 5+ Years 1000 Posts

    hopefully we can help solve your problem! :great:

    have you checked the pressure of the new pump???
  3. 83Sub

    83Sub New Member

    no not yet but i thought if u got air into the system u had to prime it.. but no not yet batteries died lol
  4. 04sierracrewcab

    04sierracrewcab Epic Member 5+ Years 1000 Posts

    im not sure on that

    u dont suppose that the battery being dead is the reason is it ?
  5. 83Sub

    83Sub New Member

    never had a prob like that the engine was warm...glow plugs work great just not getting the fuel part...
  6. 83Sub

    83Sub New Member

    but if theres any diesel mechanics out there that know a bit lol... not sure if i need to crack the injectors open to bleed the system
  7. EagleTalons

    EagleTalons Rockstar 100 Posts

    If you took the pump off you may have to prime it. Also by installing a new pump you may have some garbage plugging the line up!

    On a diesel tractor we ran all the fuel out of it (bad!) and it sucked a whole lotta dirt into the lines by doing that. Which when you put in the new pump you may have disturbed some garbage causing it to plug the line.

    Some advice would be to take and clean the diesel tubes and then prime them. Even if there is no garbage it could always use some cleaning!
  8. Pete95Sierra

    Pete95Sierra Epic Member 5+ Years ROTM Winner 1000 Posts

    agreed you need to prime it and make sure it is clean. if you did that than crack the #1 injector and bleed the system of any air.
  9. Howie

    Howie Rockstar

    No start conditions on diesels are normally:

    Fuel Filter/Water Separator
    Bad fuel/Bacterial infestation
    Gelling of the fuel
    Air trapped in lines
    Bad injectors
    Bad fuel injection pump.

    Most likely air trapped in the lines. Crack your fuel lines at the injector, if possible. If a Crd system, you can try at the rail. Purge all air from the tank to the injector.

    Fill the tank, filters, pump, injector pump, injector.

    Also, It might be worth while to change the filters if you have had to replace the pump seeing as how your going to be under there anyway. And when you do, I reccomend adding one with a fram fuel/water separator that has the petcock, which will make bleeding the water off soo much easier.
  10. retired

    retired Rockstar 100 Posts

    Pull the fuel filter and make sure it's full of fuel. If full put it back on. Go get yourself a big can of W-D 40 and remove your air filter lid and have someone crank the engine while you use the W-D 40 to prime it. It may take a whole can. Good luck.

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