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Hi Everyone. This is my first post so please excuse my negligence. I have a 1997 F350 460 7.5 automatic two wheel drive.
I am having a sudden issue with the coolant being instantly over pressurized. Even when the engine is cold and I start it for a minute and then shut it off, the coolant comes under great pressure. I noticed this starting when coolant was being forced out of the overflow reservoir. The truck does not overheat.
I changed thermostat and radiator cap.
This is my moving truck and we are about to go almost 2,000 miles with the truck full of our "stuff" (this has a 15' enclosed box on it to, like an old Uhaul).
Please give me any ideas you may have or anything I can do from my own driveway. I know it may be the head gasket but praying it is not. Please help!!!
Lastly, do I dare take off with it doing this and just bring a lot of coolant with me???
My guess would be blown head gasket. You will need to do a compression check and or a cylinder leakage test to verify. I would not take it on a long trip. Good Luck