N14 dropped valve or cracked piston

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Sep 20, 2023.

  1. mile marker 27

    mile marker 27 Road Train Member

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    Started it but couldn’t tell much cause so much smoke from all the heads and the oil passages from the rocker boxes to the jakes were shooting oil 3 feet high, that was mixed with antifreeze. Would’ve thought the oil would have been milky but the coolant is clearly still separated from the oil.
     
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  3. Transportauto

    Transportauto Light Load Member

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    Pull the exhaust manifold, you will see which cylinder is the problem,
     
  4. 062

    062 Road Train Member

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    You can try a poor man’s compression test.
    Pull the injectors and use a rubber tip blow nozzle to pressurize the cylinder.
     
  5. mile marker 27

    mile marker 27 Road Train Member

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    I’m gonna pull the heads and drop the pan. Check ever hole from the top, from the bottom and each piston cooler. I’m not really gonna be satisfied, unless I tear it plum down. I’ll do the work myself and my time is much less valuable than most folks. I won’t know what I got unless I do it myself and ask questions.
     
    W923 Thanks this.
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