I have a 2002 Land Rover discovery II and it leaks out of the presure tank over flow. Had a pressures test done all good did a gas pressure test liquid stayed blue indicating no head gasket leak. Changed the thermostats, the upper hoses are hot but the lower hose from the rad to the thermo is cold. Fan turns and temp gauge shows normal. After about 15 mins the pressure tank bubbles and blows out the overflow and also no heat
PLEASE HELP

 

This has been covered a gagillion times in this forum alone. Search overheating issues. You will find a ton of info. Also you might want to post it in a tech section not the intro.

Sounds like you've got a clog somewhere I'd guess from the basic info you gave. Maybe radiator clogged w gunk. In my opinion it's probably headgaskets. But I don't know much.

 

Thanks for the info im new to this site I will post in tech section and as for head gasket the gas test was good