Isuzu 4he1 diesel

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Aalaniz iii, Aug 9, 2022.

  1. Aalaniz iii

    Aalaniz iii Bobtail Member

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    Aug 9, 2022
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    My newly rebuilt, 2nd time, keeps spitting out front crankcase seal when a load is put in it. I tore it apart for the second time thinking they had installed a ring(s) on backwards. I put on a new front engine cover as well. Any ideas???
     
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  3. AModelCat

    AModelCat Road Train Member

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    Too much crankcase pressure. Check the vent system.
     
    biopure22 Thanks this.
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