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Fuel is black

Discussion in 'Trucks [ Eighteen Wheelers ]' started by gudethangs, Jan 6, 2015.

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  1. Jan 6, 2015 #1
    gudethangs

    gudethangs Bobtail Member

    23
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    Dec 14, 2014
    0
    My fuel is black--like the exhaust got in there somehow. Got a Davco bowl with a Det. 60. Engine sputters & puffs smoke going up hill in low gears. Just change EGR, cooler, delta p sensor. Still same. Any thoughts?? Thanks
     
    gudethangs, Jan 6, 2015
    gudethangs, Jan 6, 2015
    #1
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  3. Jan 6, 2015 #2
    gokiddogo

    gokiddogo Road Train Member

    8,786
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    Mar 5, 2012
    Ontario Canada
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    re you saying looking in the tank its black? Or are you looking through the glass of your davco fuel filter?
     
    gokiddogo, Jan 6, 2015
    gokiddogo, Jan 6, 2015
    #2
  4. Jan 6, 2015 #3
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

    18,756
    45,806
    Sep 18, 2006
    the road less travelled
    0
    You have microbes growing in the fuel. You will probably need help dealing with this, just putting in the biocide products will leave you with a fuel system plugged with sludge, unless you got a charge of bad fuel somewhere recently.


    It's called diesel algae by some, but it's actually fungus or bacteria.
     
    25(2)+2, Jan 6, 2015
    25(2)+2, Jan 6, 2015
    #3
    Cottonmouth85 Thanks this.
  5. Jan 6, 2015 #4
    BoxCarKidd

    BoxCarKidd Road Train Member

    4,525
    6,586
    Aug 26, 2014
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    Look in fuel tank, with engine running, at fuel return line area. If it is bubbling like a low pressure air hose in a water bucket it could be bad injector seals. Be sure there is no air in fuel lines entering head.
     
    BoxCarKidd, Jan 6, 2015
    BoxCarKidd, Jan 6, 2015
    #4
    clausland Thanks this.
  7. Jan 6, 2015 #5
    SHO-TYME

    SHO-TYME Road Train Member

    3,425
    3,179
    Apr 20, 2011
    Dahlonega, GA
    0
    It's Algae, dump Power Service Bio Clean in it NOW!!!!!! Get several fuel filters, you'll go through them till the algae is gone.
     
    SHO-TYME, Jan 6, 2015
    SHO-TYME, Jan 6, 2015
    #5
  8. Jan 6, 2015 #6
    gudethangs

    gudethangs Bobtail Member

    23
    3
    Dec 14, 2014
    0
    Thanks for all the advice. It's in the tank as well. I don't see any bubbles inside the tank but then again it's difficult to see inside the tank. I'll give that bio clean a try.
     
    gudethangs, Jan 6, 2015
    gudethangs, Jan 6, 2015
    #6
  9. Jan 6, 2015 #7
    strollinruss

    strollinruss Road Train Member

    1,366
    1,699
    Jun 5, 2012
    Montgomery, TX
    0
    Carry several extra filters and a wrench. Put some clean fuel in a can so you can fill your filter before putting it on.
     
    strollinruss, Jan 6, 2015
    strollinruss, Jan 6, 2015
    #7
  10. Jan 8, 2015 #8
    123.Red Beard

    123.Red Beard Bobtail Member

    49
    37
    Jan 4, 2015
    Cochise County, AZ
    0
    Also run it as low as you dare ... Then only put in enough for the day, treat again ... Takes awhile for it to grow, so if your fuel is gonna sit for awhile, you need to treat it!

    Most marina's have treatment on hand ... Also a tad a gasoline will kill it too, but new computer systems don't like gasoline! ;)
     
    123.Red Beard, Jan 8, 2015
    123.Red Beard, Jan 8, 2015
    #8
  11. Jan 9, 2015 #9
    hatlesstrukr

    hatlesstrukr Light Load Member

    128
    30
    Jan 30, 2010
    El Paso, TX
    0
    Touch the black residue..

    If slimy, you have algae
    If gritty, you have an air leak in the fuel system
     
    hatlesstrukr, Jan 9, 2015
    hatlesstrukr, Jan 9, 2015
    #9
    dustinbrock Thanks this.
  12. Sep 26, 2016 #10
    gudethangs

    gudethangs Bobtail Member

    23
    3
    Dec 14, 2014
    0
    Replace all my injectors...no more black fuel
     
    gudethangs, Sep 26, 2016
    gudethangs, Sep 26, 2016
    #10
    driverdriver Thanks this.
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