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2012 isx blowing coolant out the overflow

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by lciambotti1, Jun 25, 2019.

  1. Jun 25, 2019 #1
    lciambotti1

    lciambotti1 Light Load Member

    107
    19
    Mar 6, 2015
    0
    Just purchased this T660 a month ago. Replaced the injectors and tubes due to what I think is a fuel rail chatter. Fully deleted. I think the chatter is my DPF filter or what’s left of it is clogged. So now in the past week, my coolant usage went from a gallon every 3K miles to 3 gallons in 2100 miles to 2 gallons in 200 miles and my driver just called and said he lost 4 gallons in 59 miles. Bought the kit from NAPA To check for the head gasket dropped liner. All came out good. Not building pressure while idling. Any ideas?
     
    lciambotti1, Jun 25, 2019
    lciambotti1, Jun 25, 2019
    #1
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  3. Jun 25, 2019 #2
    S M D

    S M D Road Train Member

    2,395
    3,406
    Mar 15, 2012
    sacramento ca
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    More than likely air compressor
     
    S M D, Jun 25, 2019
    S M D, Jun 25, 2019
    #2
  4. Jun 25, 2019 #3
    tallmon

    tallmon Medium Load Member

    657
    318
    Oct 22, 2014
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    I had two of these, pretty much same scenario. Head gasket. I redid the gaskets both twice and sold them. Deletes on that model are terrible.
     
    tallmon, Jun 25, 2019
    tallmon, Jun 25, 2019
    #3
  5. Jun 25, 2019 #4
    DieselTech_Aus

    DieselTech_Aus Light Load Member

    274
    309
    Dec 20, 2017
    WA
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    either air compressor or head gasket.

    dropped liner in early stages will only bypass gasket under high load and high cylinder temps
     
    DieselTech_Aus, Jun 25, 2019
    DieselTech_Aus, Jun 25, 2019
    #4
  7. Jun 25, 2019 #5
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,780
    1,726
    Jun 14, 2009
    romulus,mi
    0
    EGR cooler. Take a look at the rear of engine, passenger side, top of transmission with a flashlight. If you see coolant puddled on top of transmission chances are you have EGR cooler failure. This is probably a big ticket repair so you should get it diagnosed properly at a reputable shop.
     
    QUALITYTRUCK, Jun 25, 2019
    QUALITYTRUCK, Jun 25, 2019
    #5
  8. Jun 25, 2019 #6
    tallmon

    tallmon Medium Load Member

    657
    318
    Oct 22, 2014
    0
    Depending on how far the delete went his EGR cooler may be blocked off. That year ISX is known for headgasget and liner issues, then with the delete it puts even more pressure on it.
     
    tallmon, Jun 25, 2019
    tallmon, Jun 25, 2019
    #6
  9. Jun 25, 2019 #7
    lciambotti1

    lciambotti1 Light Load Member

    107
    19
    Mar 6, 2015
    0
    Yea. The previous owner blew the head gasket and replaced it. Happened a second time and he sold the truck to a shop. The shop owner told me he swapped heads, put liners, pistons and bearings in it, but didn’t deck the block. But at this point, I don’t believe much of what he says. He wouldn’t produce any receipts for the the materials.
     
    lciambotti1, Jun 25, 2019
    lciambotti1, Jun 25, 2019
    #7
  10. Jun 25, 2019 #8
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,780
    1,726
    Jun 14, 2009
    romulus,mi
    0
    Just an educated guess......... cylinder #5 dropped liner. It's always ##%#ing #5!!!LOL!
     
    QUALITYTRUCK, Jun 25, 2019
    QUALITYTRUCK, Jun 25, 2019
    #8
    Socal Xpress Thanks this.
  11. Jun 26, 2019 #9
    lciambotti1

    lciambotti1 Light Load Member

    107
    19
    Mar 6, 2015
    0
    Did the block check, fluid changed from blue to green in about 25 seconds.
     
    lciambotti1, Jun 26, 2019
    lciambotti1, Jun 26, 2019
    #9
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