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Losing Coolant but cant find leak.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Buckeyes614, Dec 10, 2014.

  1. Dec 10, 2014 #1
    Buckeyes614

    Buckeyes614 Light Load Member

    154
    154
    Jan 22, 2014
    0
    Basically I have a 2006 century with a deleted egr system, I'm losing coolant, I had an oil sample done , it came out really clean, I also had all the hoses and clamps checked and tightened, the weird thing is I lose coolant when I'm driving and the temps get down to 24 degrees and below, when the truck has been off over night, there is a tiny leak behind the bunk, this tiny leak has existed for 2 1/2 yrs tho, coolant loss is about 1 gallon a day when I'm driving in +24 and below, there is no white smoke out of exhaust pipes, again the oil is clean, there are no sign of bubbles, oil or fuel or any contaminated in coolant reseviour, truck performance is still the same . Any help pls 14 l detroit btw
     
    Last edited: Dec 10, 2014
    Buckeyes614, Dec 10, 2014
    Buckeyes614, Dec 10, 2014
    #1
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  3. Dec 10, 2014 #2
    PurplePete

    PurplePete Light Load Member

    131
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    Nov 15, 2011
    Tyler, Mn
    0
    Does the antifreeze look right, no oil film? Besides head or head gasket, water pump or heating system failure. There is the transmission oil cooler, if it fails your transmission gets filled with coolant, not good. It happened to me & cost me a tranny. One morning I started my truck & tranny fluid started leaking out of it in a big way, out of the shift tower. The coolant had completely filled the tranny until it was overflowing.
    Just remove the fill plug on the side of your transmissio, it shouldn't be over full. Start the engine with the plug out, if there's water in there it'll start splashing & spraying out.
    10 minutes of your time to check.
     
    PurplePete, Dec 10, 2014
    PurplePete, Dec 10, 2014
    #2
  4. Dec 10, 2014 #3
    Buckeyes614

    Buckeyes614 Light Load Member

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    Jan 22, 2014
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    There is no sign of any contaminants in coolant overflow, it's strange that can happen though, coolant in transmissions. I will have it checked though, was the truck shifting fine when that happened
     
    Buckeyes614, Dec 10, 2014
    Buckeyes614, Dec 10, 2014
    #3
  5. Dec 10, 2014 #4
    PurplePete

    PurplePete Light Load Member

    131
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    Nov 15, 2011
    Tyler, Mn
    0
    I took it to a shop right away. They drained off the excess and said "who ever filled it last over did it", lol. Off I went, every thing seemed fine for a few weeks. Until I had a load oof fat cattle (heavy, very heavy) in city traffic the tranny started howling, chattering, & slipping out of gear.
     
    PurplePete, Dec 10, 2014
    PurplePete, Dec 10, 2014
    #4
  7. Dec 10, 2014 #5
    hatlesstrukr

    hatlesstrukr Light Load Member

    128
    30
    Jan 30, 2010
    El Paso, TX
    0
    Do a thorough check of all hoses and the radiators. If it uses red coolant, it leaves a white residue where the leak is.
     
    hatlesstrukr, Dec 10, 2014
    hatlesstrukr, Dec 10, 2014
    #5
  8. Dec 11, 2014 #6
    blanco

    blanco Road Train Member

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    Nov 20, 2009
    Gwinnett County, GA
    0
    Someone already posted ..
     
    blanco, Dec 11, 2014
    blanco, Dec 11, 2014
    #6
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