This mourning I'm heating up the carb it's starts rev up n down around 2to 3 rpm it does this till it warms up also throwing out cold air then when I drive it throws hot sometimes it stays hot when I idling too is it the head gasket? Ir what coludí it b the car is not overheating and it's not leaking fluid just changed the radiator n oil*please help lol searched but did not
Sounds like air in the coolant, check your coolant level and then bleed if it is not 100% full. Make sure you bleed with your heater on full. If you are substantially low, then start looking for a leak.