Title says it all my upper radiator hose collapses on it self when i have the gas pedal pressed and the more i press the pedal the more it collapses! Truck has plenty of coolant and i noticed it runs cooler when idling obviously because its not under throttle but what would cause this?

 

maybe a bad hose?...how many miles are on the truck

 

168,xxx

 

yea id throw some new hoses on it and go from there

 

im betting the rad is plugging up

 

I'm betting it's not.
He has an air bubble in the top of the engine, a thermostat stuck closed,and weak radiator hoses.

 

x2. Air bubble.