How do I burp my heater coil - Cars & Trucks

you could have a half stopped up heater coil but i really think it's the thermostat.. maybe an air bubble . did you burp the system after flushing it.. there is a bleed valve on the high point of many engines to get rid of any air in the system

1999 bmw 323i
I suggest you get one of those manuals people get nowadays to do it yourself.. My nephew use it to repair my car and it's totally repaired now. Here's the website he bought it from. reliable-store.com
I have attached link for your car model as well

If the radiator has steam coming of off it you have a hole in it some where have it pressure checked. Also what you are hearing in the heater core is in fact air that has got in the core due to the hole in radiator it will sound that way have a good mech check the system out and burp the heater coil a mech will no what I mean. FYI that means getting all the air out of the cooling system.

air trapped in system, very common. need to burp it.

go to shop with evac/fill equipment so they can burp and chage antifreeze at same time.

go here

http://groups.yahoo.com/group/villagerquest/

check coolant level, you may have air trapped in the system.
Also, is car engine warming up to normal range on gauge? IF not, change thermostat.
Loosen the radiator cap when cold. start car, let engine warm up and see if you get a burp of air out. Fill radiator as it cools.

Check the Thermostat sounds like it is faulty and is opening when it should be closed. Cheap fix around $15 doing it yourself,

THERE IS NO HEATER CONTROL VALVE ON THE WATER HOSES. NEW HEATER CORE. INLET LINE right before heater core hot, outlet after core look warm. Burped cooling system 5 times with engine at operating temp. Installed homade burp VALVE right after heater core outlet(high part of hose). Still no heat. Removed water pump, impeller still in good shape not stripped off shaft. Removed heater core hoses flushed water thrue the connections on the block to the water pump INLET and outlet. flushed water thrue heater core and hoses. Going to put it back togeter today. Used known good gauge to check water temp for operating temp in test. 195 f

possible air pocket, look for bleeder , when bleeding open heater core ,turn on heater , is water pump ok , heads and head gasket ,

We went to the website for Peak AntiFreeze and trying burping it for air. VOILA! Flushed and burped running beautiful now.