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flooding when starting any suggestions ???

Discussion in '1982-Present GM Diesel' started by doctor4x4, Apr 27, 2003.

  1. doctor4x4

    doctor4x4 1/2 ton status

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    injector pump or injectors??? what ya ll think
    but once it starts it runs and drives great with no smoke
    im puzzed any ideas are appriciated and welcome
    Thanks in advance
    Randy /forums/images/graemlins/confused.gif
     
  2. BlueBlazer

    BlueBlazer 1/2 ton status

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    Diesels dont "flood". The only reason that fuel in the cylinder wouldnt light off is cause of low cylinder temps from bad glow plugs etc. or low compression.
     
  3. doctor4x4

    doctor4x4 1/2 ton status

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    well why does it only put out this HUGE smoke ball when i am starting it ????then
    low compression is a possible cause as it about 320# but the book says no problem till 300 and perfect is only 340 - 350
    so i figure its about at the half way point ??
    thanks for the feed back though mabe i try some slick 50 to
    "COAT " my cylinders and run a heaver weight oil like straight 30 what you guys think about that ??
    /forums/images/graemlins/burb.gif /forums/images/graemlins/usaflag.gif
    thanks 4 the feed back though
     
  4. Tybee

    Tybee 1/2 ton status

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    Check your glow plugs! How long does it crank over before it starts?
     
  5. bigblock454

    bigblock454 Clack Clack Clack Premium Member

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    What color is the smoke? White smoke on startup is normal when it is cold. My 6.2 J pours it out when it is 15 degrees or so for the first 10 seconds.
     
  6. doctor4x4

    doctor4x4 1/2 ton status

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    i run a jumper wire for my glow plugs and they all check good
    yes its white smoke same thing like 10 - 20 seconds then all gone and running good
    starting well it either fires right away or -
    but sometimes if it dont startt right away then i i gotta leave it along for about 1 hour and come back and try again and repet the process till it does start
    im gonna do a oil change to a better grade and quality of oil and see if that helps
    thanks for all the help
    Randy
     
  7. BlueBlazer

    BlueBlazer 1/2 ton status

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    Changing oil will not help at all. You need to take your glow plugs out and individually ground them to the block and make sure they glow. I dont like any other methoed cause you really cant see whats going on. If they all still check out OK, maybe check to see that you are getting power to your cold advance and your fast idle is working.
     
  8. bigblock454

    bigblock454 Clack Clack Clack Premium Member

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    Short of Hydro-locking your motor you can't flood a diesel. It could be your GPs or you have a pin hole in your fuel line that is letting air into the system.
     
  9. arveetek

    arveetek 1/2 ton status

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    If you do change your oil, make sure it is rated for diesel use, with either a CH-4 or CI-4 in the little API circle. I believe that most straight 30 weight oil is only rated for gasoline engines (SF, SJ ratings only).

    I don't think changing the oil will help any. Perhaps going to a full synthetic will allow the motor to spin over easier when cold, but that's about it. Stick with a good 10w-40 diesel oil.

    You have either a glow plug or fuel system problem. Excess white smoke at startup is usually attributed to cold cylinder temps, caused by bad plugs or low compression. Worn out injectors could also cause this by not atomizing the fuel correctly.

    Casey
     
  10. doctor4x4

    doctor4x4 1/2 ton status

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    yea thanks thats a good tip and a great link to the api codes
    the injector spray was 1 of the thing's i was thinking of but then it would run bad once it started also right ???
     
  11. doctor4x4

    doctor4x4 1/2 ton status

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    and GREAT tip on the cold advance i never even thought of that im gonna check wiring tomorrow
    as i pulled my glow plug controller plug 2 discover some corossion so the hunt will start there
    thanks agin for all the help guys i really appreciate :-)!!
    i have a factory service manuel and a diesel compression tester if you guys ever need it or info in return 4 the help
    Randy
     

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