[rockfla]

IF your hoses are supple enough you "might" be able to feel around the bottom of the upper hose where in goes into the water pump and squeeze enough to feel it BUT IT is entirely possible doing such "could" disrupt its position and then you might have to remove the hose to fix it!!! You might be able to just remove the top of the hose at the radiator inlet and look down inside and you would also be able to see the thermostats in there!!!!