Replaced head and gasket still smoking out blow by

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Mad dog logistics llc, Aug 23, 2019.

  1. Mad dog logistics llc

    Mad dog logistics llc Light Load Member

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    I just replaced the cylinder head and gasket. The head was cracked from my driver over heating the motor. We got the truck running today and noticed white smoke coming from the blow by tube. Is it possible that the motor is burning off antifreeze that was left behind in the old oil? I changed the oil. I did the bottle test there are no bubbles and the motor is hot, tomorrow I will pressurize the coolant system to see if it holds. A gut told me that it could be coolant that was left in the motor from when I drained the oil? Any one have any ideas?


    2000 Cat C-10
     
  2. Intothesunset

    Intothesunset Road Train Member

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    Could be your piston rings, or liner issue?
     
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  3. truckdriver31

    truckdriver31 Road Train Member

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    did you get new head bolts.
     
    Intothesunset Thanks this.
  4. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Times 2
     
    Intothesunset Thanks this.
  5. swaan

    swaan Road Train Member

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    Depending on how hot he got the engine the tension on the rings could be a lot less now. Or even scored liners.? Nothing good comes from overheating an engine, especially if he lost all the coolant also.
     
  6. Mad dog logistics llc

    Mad dog logistics llc Light Load Member

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    Jan 13, 2014
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    Yeah he added 3 gallons of fluid. A hose had a leak. The oil had antifreeze in it an oil pressure had dropped I was hoping it was burning off old coolant in the system, pressuring it now to see if it holds.
     
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