Hey everyone I need some help. I’m afraid I know what’s wrong but keep denying it. I have a 2012 6.7 Cummins HO. Fully deleted and getting pressure into expansion tank causing antifreeze to move over and not come back. Causing coolant system to be starved of coolant. I have changed thermostat, radiator cap, and pulled water pump and checked it, passed combustion test, also flushed what lines I could except the radiator.
All this started after the bypass line going to riser pipe failed. Could it still have air?? Or going to be head gasket
The times pressure or how much coolant moves and temp it runs varies. Nothing is consistent to tell me I have a head or head gasket problem. I have a 15,000 fifth wheel. I can hook to it go 5?miles have to move antifreeze back then roll 200 miles with no problem with temp running 197 to 212. Then pulling empty will do same thing. Is this for sure signs of a gasket problem. All help is greatly appreciated it’s a head scratcher
Ohhh yeah it’s running a H& S mini max with 80 horse tune I believe
All this started after the bypass line going to riser pipe failed. Could it still have air?? Or going to be head gasket
The times pressure or how much coolant moves and temp it runs varies. Nothing is consistent to tell me I have a head or head gasket problem. I have a 15,000 fifth wheel. I can hook to it go 5?miles have to move antifreeze back then roll 200 miles with no problem with temp running 197 to 212. Then pulling empty will do same thing. Is this for sure signs of a gasket problem. All help is greatly appreciated it’s a head scratcher
Ohhh yeah it’s running a H& S mini max with 80 horse tune I believe