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Coolant leak after replacing heads

Discussion in 'Engine & Performance' started by chris44nala, Sep 10, 2019.

  1. chris44nala

    chris44nala Junior Member

    Posts:
    3
    Likes Received:
    0
    Joined:
    Sep 9, 2019
    Location:
    Limestone County Alabama
    First Name:
    Chris
    Truck Year:
    1978
    Truck Model:
    GMC Sierra
    Engine Size:
    350
    Hi,

    So, I bought some heads for my 78 GMC and finally got the thing back together. All seemed well at initial startup. Oil pressure, good. Coolant temp good. Then my worst fears were realized. Billowing white smoke after a short drive. Got it home after fumigating the neighborhood and parked it.

    The question is what is the best way to determine where the leak is? Also, is it possible that it is an intake manifold gasket problem?

    Thanks for the help,

    Chris
     
  2. Frankenchevy

    Frankenchevy . Supporting Member

    Posts:
    2,911
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    2,180
    Joined:
    Jan 3, 2018
    Location:
    usa
    First Name:
    Jeremy
    Truck Year:
    old
    Truck Model:
    pickup
    Engine Size:
    8 cylinder
    Water in oil may be an intake manifold problem. But water in the combustion chamber points to head gasket or cracked head.
     
  3. chris44nala

    chris44nala Junior Member

    Posts:
    3
    Likes Received:
    0
    Joined:
    Sep 9, 2019
    Location:
    Limestone County Alabama
    First Name:
    Chris
    Truck Year:
    1978
    Truck Model:
    GMC Sierra
    Engine Size:
    350
    Thanks. Kinda figured. Pulling apart for a postmortem in a few days.
     

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