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Old 22-05-2014, 03:05 PM   #1
leonbray
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Default Coolant moving around in expansion bottle

Just noticed that the coolant is bouncing about in the expansion bottle chamber above the main hose.

When the revs change as the a/c compressor cuts in and out it sends a spurt of coolant into the bottle.

It doesn't look like bubbles from a head gasket and the engine is running OK and not using any coolant

Is this normal or the signs of a head gasket problem

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Old 22-05-2014, 03:36 PM   #2
aussiblue
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Default Re: Coolant moving around in expansion bottle

Not normal but check for soft/ collapsing radiator hoses and try a new pressure cap first.
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Old 23-05-2014, 09:54 AM   #3
auIILTD
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Default Re: Coolant moving around in expansion bottle

I have had the same problem. Change of radiator cap and thermostat corrected the issue.

Cheers
Stu
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Old 23-05-2014, 05:42 PM   #4
Davehoos
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Default Re: Coolant moving around in expansion bottle

Quote:
Originally Posted by auIILTD View Post
I have had the same problem. Change of radiator cap and thermostat corrected the issue.

Cheers
Stu
coolant doesn't move until the thermostat opens-it its open when cold it needs to be replaced-it should not move too much when first started.

Then
clamp off the hose from the thermostat to the bottle-the radiator may need clogged.
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