Combustion gas in coolant 9240
Just bought a used 9240 from my local Case dealer last fall. 1100 engine hours, MY15, so it’s got the 16 litre Iveco with DEF. When I was transporting it home from the dealer, it logged a fault code for low coolant pressure at water pump inlet. So I stuck my combustion gas tester on the surge tank and the liquid changed colour, indicating combustion gas was present. Called the dealer, they tested it and found the same thing. They opened a case file and they are being told it’s either a cracked liner or head. Anyone else run into this before?