2015 isx cm2350 when I shut the truck off I can hear a gurgle sound coming from the top rad hose/coolant reservoir. Doesn't matter if the engine is at running temp or cold. Doesn't push coolant out or even into the overflow. I put on a reservoir cap with a hose on it and stuck it in a water bottle. No bubbles. What could cause this?
Cummins isx coolant gurgle
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Petegraintrain, Mar 2, 2022.
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