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Coolant in fuel filters

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Sktrucker89, Feb 14, 2020.

  1. Feb 14, 2020 #1
    Sktrucker89

    Sktrucker89 Bobtail Member

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    Hi i have a 2013 freightliner cascadia dd13. Coolant keeps coming into fuel filters and then prompting water in fuel codes. Changed the injector cups and o rings twice and happening again. What could be the next best reason that it is happening. Thanks in advance
     
    Sktrucker89, Feb 14, 2020
    Sktrucker89, Feb 14, 2020
    #1
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  3. Feb 14, 2020 #2
    magoo68

    magoo68 Road Train Member

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    If it’s a heated filter I’d suspect that first after the work you’ve done.. try shutting off water supply to filter if you have a valve or bypass it temporarily to see if that’s the cause .
     
    magoo68, Feb 14, 2020
    magoo68, Feb 14, 2020
    #2
    Rideandrepair and AModelCat Thank this.
  4. Feb 14, 2020 #3
    062

    062 Road Train Member

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    062, Feb 14, 2020
    062, Feb 14, 2020
    #3
  5. Feb 14, 2020 #4
    mhyn

    mhyn Road Train Member

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    when you changed cups and o-rings did you remove remaining coolant from fuel tanks ?
     
    mhyn, Feb 14, 2020
    mhyn, Feb 14, 2020
    #4
    Rideandrepair, magoo68 and 062 Thank this.
  7. Feb 16, 2020 #5
    baha

    baha Road Train Member

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    If the fuel caps are at end of tanks you can park with truck pointed to where water will pool up below fuel cap end of tank, a hose can be put to bottom of tank and most all water can be removed that way or look for allen screw at one end of tank to drain water out, if you have coolant heaters inside tanks look for leaks in them?
     
    baha, Feb 16, 2020
    baha, Feb 16, 2020
    #5
    mhyn, Rideandrepair and 062 Thank this.
  8. Feb 16, 2020 #6
    mhyn

    mhyn Road Train Member

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    they are in the middle of tanks...
     
    mhyn, Feb 16, 2020
    mhyn, Feb 16, 2020
    #6
    Rideandrepair Thanks this.
  9. Feb 16, 2020 #7
    baha

    baha Road Train Member

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    You can buy a hose called a magic hose at T/stop with a ball in the end to start it to pull water out of bottom tanks ?
     
    baha, Feb 16, 2020
    baha, Feb 16, 2020
    #7
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