jeeptorino68
Full Access Member
This us kinda what I was worried the issue would be.It sounds like you could have a small leak in the head gasket which is allowing combustion gases to get into the coolant. My truck has this issue. I get the same gurgling sounds in the heater core along with an occasional higher than normal temp gauge reading. I have no white smoke in exhaust, no loss of coolant and no coolant in the oil (or oil in coolant). I pressurized all 6 cylinders with compressed air at TDC, removed the radiator cap and noticed the coolant rise up and out of the radiator on 2 of the cylinders which confirmed this problem. You might want to perform a similar test on your Jeep or do a simple block test, which would probably be easier. .
I'll see about doing more tests.