hi all i have a 02 115bhp 1.9tdi gal aux heater not worked for years but not worried but now i have a problem with no heat in the car, she does not overheat stays at 90 did have a bit of a leaking rad and put in k seal ??????? wether or not this has messed up the circulation or not. have removed bottom hose from engine and run the engine but there is no coolant comming out of the block or the hose on tickover anty ideas??