coolant

[95 Powerstroker]

my truck has been sitting for about a week waiting for my injector to get here and i went out to take a look under the hood i happened to feel the upper radiator hose and it was hard like i had just got done running it. so my question is why is the coolant system staying under pressure for so long? shouldn't the system pressure bleed off after it cools down? thanks for any ideas.

[ZachBoyer]

I don't have an answer for ya there. My tube is flimsy weather I have ran the truck for 6 hours or before I start it. And has not overheated since I bought it

[toad]

Is it frozen? You should not have pressure that long. Or you may have a metal coil inside the hose to keep it from collapsing

[95 Powerstroker]

no it aint frozen and theres no metal spring in the hose (ive had it off before). and when you take off the cap coolant comes out like its to full? and the small hose is not plugged that goes to the over flow.