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AR15.COM
3/16/2016 6:36:29 AM EDT
The hose that runs from the radiator to the thermostat is shrunk like it's been sucked by a vacuum, is the thermostat stuck ?
3/16/2016 6:37:35 AM EDT
[#1]
Bad fetzer valve
3/16/2016 6:38:41 AM EDT
[#2]
Quoted:
The hose that runs from the radiator to the thermostat is shrunk like it's been sucked by a vacuum, is the thermostat stuck ?
View Quote

More than likely, yes. Could also be crap in your radiator cap not allowing it to vent.
3/16/2016 7:15:11 AM EDT
[#3]
Have you checked the ball bearings? Sorry ,couldn't resist.
3/16/2016 7:19:18 AM EDT
[#4]
OP, check the hose that goes from the cap flange on the radiator over to the overflow tank and see if its plugged or kinked, if not make sure the overflow tank vent is working and then test the radiator cap...as an engine heats up the coolant expands, and pushes the excess into the overflow bottle, as it cools it should suck it back in, if its not something is plugged..hence the flat hose.......
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