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Thread: 03 lb7 duramax

  1. #1
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    Default 03 lb7 duramax

    having some prob. w/truck...intermitenly will only crank and run for 10-12 seconds then just die and will not crank for 5-10 min. after i hit the primer 5-6 times..any help would be greatly appreciated..thanks

  2. #2
    Senior Member DmaxHawk's Avatar
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    When was the last time you changed your fuel filter? Is there a leak when you prime?
    07 El Bee Zee
    Little faster than stock...

  3. #3
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    Default lb7 duramax

    6000-7000 on filter from gm no leaks that i can tell no smell of diesel either

  4. #4
    Senior Member DmaxHawk's Avatar
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    I ask because it sounds like you are loosing your prime some how.
    07 El Bee Zee
    Little faster than stock...

  5. #5
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    6000-7000 on filter no leaks that i can tell no smell of diesel either

  6. #6
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    thats what mech. at work tell me...one said they were havin prob. w/injectors leaking back to cylinders

  7. #7
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    but it does this one day then may go 2-3 days before it happens again runs like normal in between and after it does crank

  8. #8
    Senior Member DmaxHawk's Avatar
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    Are you throwing any codes?
    07 El Bee Zee
    Little faster than stock...

  9. #9
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    did diag sun. night and no codes came up

  10. #10
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    Any work on the engine lately? If so what type? How many miles on it?

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