Cummins ISM overheating

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Sickofitall4now, May 23, 2019.

  1. Deere hunter

    Deere hunter Road Train Member

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    If your mileage is bad could be boost leak in air to air this could also cause overheating in the engine and the pyrometer temperature going up or I would check thermostats!!!
     
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