2013 MACK GU713

Discussion in 'Ask An Owner Operator' started by Tarsem, Feb 12, 2021.

  1. Tarsem

    Tarsem Bobtail Member

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    Feb 12, 2021
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    During the regen blowing coolant out of the over flow , I have 2013 Mack GU713 , any suggestions ?
     
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  3. Jaebo74

    Jaebo74 Medium Load Member

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    Feb 4, 2021
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    Just a thought, but, it might be that your pressure cap is not working. It may not be letting water back into the engine when the engine cools, thus, overfilling the overflow tank.
     
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