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Old 02-09-2005, 04:02 PM   #1
BigClunke
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Default Coolant bleeding nightmare, please help

I changed my coolant two days ago and everything has been fine until today. I was not getting any heat unless i was above 2k (driving).a few minutes later my temp shot all the way up to 2/3 and was climbing for hot but I got home without issue (just a little panic). so i figured that i had some air in the line so i took the radiator cap off and of course coolant went everywhere. so i refilled the reservoir (the upper one) and started the bleeding process as i understand it; upper radiator cap off revving the engine slightly until the coolant raised and capped it before it was going to overflow. i had also been told to try squeezing the upper radiator hose, but this didnít seem to help much. i can tell that there is clearly some problem involving the heater core (because of the lack of heat) but i donít seem to be able to fix this problem. i have tried countless times to bleed the system after driving a bit but that doesnít seem to help either.
is my methodology wrong? what should i do now?
(Sorry if this is slightly incoherent, i am hungry, cold and tired...)
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Old 02-09-2005, 04:17 PM   #2
Stanley
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Did you make sure that your temperature setting was moved all the way to hot when you bled and topped off your coolant?

I hope you have learned that you should never open your radiator cap when the car is hot.
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Old 02-09-2005, 04:24 PM   #3
wcbjr
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No heat = very low coolant or blocked heater core.
Keep topping off upper tank and squeezing upper radiator hose. It usually takes me 2-3 times to get all the air out.
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Old 02-09-2005, 04:48 PM   #4
BigClunke
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yeah the heat has always been on full blast. i added about 7l of coolant/water when i changed it. because of the over flow its probably gotten to be quite a bit more.
what should i expect to see or hear when it "burps"? i have assumed that the level raising + air escaping was always a good thing but no matter how many times it does this nothing seem to change of affect these problems.
is it possible that something has broken and is preventing me from getting all of the air out?
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Old 02-09-2005, 04:51 PM   #5
wcbjr
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You will notice air bubbles and the lowering of the level in tank.
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Old 02-09-2005, 05:13 PM   #6
hotrod
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When you changed your coolant did you pull the thermostat? If so you might have put the thermostat in backwards. If not you just need to take your time and get all the air out. By pulling the cap when it was warm you may have blown out most of the water and gotten more air in the system.

It does take a while to get all the air out. It helps when you try to burp it if you position the right front of the car as high as practical.

Do it on a sloped drive way if you can. If you can make the passenger side higher than the radiator it helps to get the air out to the coolant tank..

Take your time, it is not a quick process.

When you think you have it all out, Fill up your overflow bottle (beside the radiator) to slightly above the full mark. Drive the car until it gets to full temp, then park it and let it cool without taking the radiator cap off. When you park, it will usually burp some air out, and if you park it until its cold, It will try to pull coolant from the overflow bottle back into the system as it cools down.

Larry
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Old 02-09-2005, 08:50 PM   #7
BigClunke
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i seem to have solved the issue. I just kept messing with it, so i cant say exactly what my problem was.
the last time i was burping i tried taking both radiator caps off and squeezing the upper hose with the aggression a very cold, late for class, and hungry twenty-something male would... i guess that worked.
when i burped it i was expecting large bubbles, i mainly got a lot of little ones but it seems to be working just fine now. im dreading the next time i have to change the fluid, i will make sure i do it in the fall because winter + maintenance = teh suk
thanks to everyone that helped!
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Old 02-09-2005, 08:53 PM   #8
Hayes
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Thermostate must be installed in the correct orentation so the system bleds out air. I alway refill my radiator with the car noise on an incline so the nose is about 4+ inches highter that the rear. Fill radiator and leave cap off. run engine untill top hose is too hot to hold and coolent is moving fast with about 2000 rpm. Squise top hose several times to expell air. Let cool with cap off and top up radiator and resevior. I've had no problems with this technique. eddie
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Old 02-09-2005, 09:45 PM   #9
ImprezaVA
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Pour slowly. Glad to see you got it figured out.

-Charles-
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Old 02-09-2005, 10:03 PM   #10
Mulder
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If you have a later model WRX with the second cap on the radiator this shouldn't be an issue. When I did my coolant change in my 02 I also replaced the radiator at the same time with a newer one with the cap, I filled the system very slowly with both caps off. It all went in (almost 2 gallons), no trapped air, no bleeding or burping needed.
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Old 02-12-2005, 02:54 AM   #11
AWDfury
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i had a new radiator put in , and they overfilled the resevoir tank. After a day of driving, it finally got down to the F mark and burped itself.
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