Sapper 157 Posted September 14, 2015 Share Posted September 14, 2015 So what are the best ways to "burb" a cooling system of the air? I know that one way involves parking on a hill but im not sure what the exact procedure is. I just re flushed the system (got a whole bunch of sandy looking crap out) and I think there must still be some air in it because it is still running too warm. Quote Link to comment Share on other sites More sharing options...
turfman454 Posted September 14, 2015 Share Posted September 14, 2015 park uphill. turn your heater on high . Once the thermostat opens you should get a pretty good initial burp out of it. Once it starts to circulate it shouldnt take to long to get all the air bubbles out of it 2 Quote Link to comment Share on other sites More sharing options...
nipper Posted September 14, 2015 Share Posted September 14, 2015 Fill the cooling system from empty SLOWLY with the engine runing. Allow the T-Stat to open and keep filling, yes with the heat on. Level ground is fine. Quote Link to comment Share on other sites More sharing options...
jono Posted September 14, 2015 Share Posted September 14, 2015 you should also be able to find a funnel designed to fit in the neck of the radiator of an EA81, maybe some extra electrical tape to make it a nice tight fit. I run mine with funnel fuller than full to burp it, squash hoses a bit, heater tap open ie hot and also run an EA82 or home built coolant overflow reservoir and suck back double seal cap on radiator. Quote Link to comment Share on other sites More sharing options...
MR_Loyale Posted September 15, 2015 Share Posted September 15, 2015 (edited) I gently squeeze the hose to help force the air out. Edited September 15, 2015 by MR_Loyale Quote Link to comment Share on other sites More sharing options...
coronan Posted September 16, 2015 Share Posted September 16, 2015 Good thermostats have a jiggler valve in them and burp themselves. If not drill a 1/16 hole in the flat area of the thermostat. Quote Link to comment Share on other sites More sharing options...
subnz Posted September 18, 2015 Share Posted September 18, 2015 (edited) No matter how careful / slowly cooling systems are refilled with water, air will be inevitably trapped in the system somewhere. The object of the exercise is is to remove these air locks and the best way to do this is to RUN the motor for a significant amount of time with the radiator cap off to release air topping up when necessary Up to 30 minutes so that the engine comes up to temperature with thermostat opening and water pump pushing / circulating water around to help push air out. Parking on slopes / squeezing hoses etc not necessary. Subaru heaters usually have water running through heater core continuously unless modified ( part of the primary cooling circuit { motor / water pump / heater core} until thermostat opens) Heat + cooling happens by heater control air flaps directing air to / away from heater core so setting heater controls to hot makes no difference in this process. Edited September 18, 2015 by subnz Quote Link to comment Share on other sites More sharing options...
ShawnW Posted September 19, 2015 Share Posted September 19, 2015 No matter how careful / slowly cooling systems are refilled with water, air will be inevitably trapped in the system somewhere. The object of the exercise is is to remove these air locks and the best way to do this is to RUN the motor for a significant amount of time with the radiator cap off to release air topping up when necessary Up to 30 minutes so that the engine comes up to temperature with thermostat opening and water pump pushing / circulating water around to help push air out. Parking on slopes / squeezing hoses etc not necessary. Subaru heaters usually have water running through heater core continuously unless modified ( part of the primary cooling circuit { motor / water pump / heater core} until thermostat opens) Heat + cooling happens by heater control air flaps directing air to / away from heater core so setting heater controls to hot makes no difference in this process. Agree with you on the newer Subarus but on the old ones the coolant shuts off to the heater with a control valve. Quote Link to comment Share on other sites More sharing options...
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