Did coolant pressure test. Found coolant leak from clamps being loose around hose from thermostat housing. Tighten them up and leak went away. I had it at 15 psi. It never came down from 15. What would cause it to not release pressure?
x15 Coolant sys pressure test. Not losing pressure after 20 min
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Brandon0928, Dec 5, 2022.
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Also tested CAC and found a leak there. Not sure if that’s relevant to pressure not releasing
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CAC on the other hand, we'll it shouldn't loose pressure but I wouldn't expect it to hold pressure forever. I mean it would be great if it did but some loss is acceptableBrandon0928 Thanks this. -
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What device did you use to pressure test the cooling system?