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Old 04-23-2005, 05:25 AM   #1
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Default water goggling noise on engine startup

Hi
I have had a good read through other threads and can not see any other similar problems.
When I first start the engine of my 95 legacyGT say after a night of sitting I hear a goggling noise as if it is cooling water or the air con stuff, I guess like an air lock in the system somewhere, can anybody suggest what it is and how to over come the problem,
Thanks
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Old 04-23-2005, 11:33 AM   #2
IronMonkeyL255
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I had that, too. It turned out to be a water bubble in the system.

Have you checked your coolant level?
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Old 04-23-2005, 06:52 PM   #3
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The noise appeared after having a full service completed which included replacing the cooling water, I actually think that you are right, do you know what was done to fix it
Thanks
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Old 04-23-2005, 10:12 PM   #4
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park the car on a hill w/ the front end in the air
start it up and while its still cold pop the cap
then fill it back up
alex
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Old 04-24-2005, 04:07 AM   #5
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Ok, sounds simple enough. I'll give it ago.
Thanks
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Old 04-25-2005, 10:11 AM   #6
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With the car parked and engine off, open the fill cap and sqeeze the main coolant line that comes off the radiator. This will "burp" the system.
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Old 04-25-2005, 10:35 AM   #7
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no offense man but its gonna require a LOT of burping if that air is in the heater core
hed be better off doing it my way
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Old 04-26-2005, 04:01 AM   #8
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I tried the incline option and I think I got some air locks out although I did take care, (slight power just in case anti freeze made a mess) I'll give it another go on a hill this weekend.
The comment that it may be in the heater coil sounds like my problem as the noise actually comes from behind the heater control's.

Do you slightly rev the engine while the cap is off ?
The burb option, maybe worth trying it in conjuntion with the hill option?.
Thanks
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Old 04-27-2005, 04:29 PM   #9
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Burping while facing uphill with the engine running. While the engine is cold, so the fans won't start, and the thermostat is not open.

How would this get air bubbles out, let alone out of the heater core? Water and air both want to follow the path of least resistance, and the thermostat being closed the only moving anywhere is going to be in the top of radiator out the fill.
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Old 04-27-2005, 04:29 PM   #10
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it is a nice set of steps though.
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Old 04-28-2005, 02:38 AM   #11
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Cjfike, bearing mind what you have said I guess you support the uphill option without burping?
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Old 04-28-2005, 09:56 AM   #12
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Yes and no. Stop the car facing uphill, and shut off the engine and let it cool down until you can grab the hose and hold on to it for a few seconds. With the thermostat hopefully still open, do the burping thing and the bubbles should move into the radiator. They would get trapped in the highest point and then once the fill is open you should start the engine top it off and have all the bubbles out of the system.

One thing to remember: unless you buy distilled water to fill the radiator with, water from any running source is going to have AIR in it. Once fresh water goes through one heating and cooling cycle, all that air is now going to be in your engine block looking for the way out (in all the wrong places).
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Old 04-29-2005, 06:29 PM   #13
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I'll give it ago
Thanks
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