hi just fitted a new thermostat refilled coolent sure it is leaking from radiator cap never had problems before thermostat broke it was stuck shut car doesnt overheat and had engine rebuild a year ago with new radiator fitted by api any help would be appicated also no problems when thermostat was taken out run fine problem only started when new thermostat was put in heatrers working ok too could it be a faulty cap

 

Make the seal is clean, if it is, pop down down to your local motor factor and buy a new one.

 

The same problem to 3 days ago. New radiator, hoses and thermostat and the car was overheating. It was air trapped in the coolant system.

 

all sorted think i spilt to much anti freeze must of just been burning off the manifold when it got really hot