Just changed the head gasket got a new thermostat but now....
After bleeding the system it will start ok from cold and build up to half way (normal) but then it will slowly rise to just under the red and stay there????
doesnt over heat, bubble, loose coolant or over pressurise and the heaters are nice and warm??? please help
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forgot to say the top radiator hose gets hot but the one coming from the thermostat housing to bottom of radiator stays cool?? i have water flowing from a hole in the header tank just under the filler neck, so water pump is working
this is a stuck thermostat.
which means no coolant circulation.
just change thermostat with new and don't get an aftermarket one get the original.
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