Date: Mon, 25 Jun 2007 17:54:21 -0500
Reply-To: Jim Felder <felder@KNOLOGY.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jim Felder <felder@KNOLOGY.NET>
Subject: Re: Gurgling after engine shutoff... normal?
In-Reply-To: <BAY125-F311C89B14ADB4062940D55A0140@phx.gbl>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
OK, I went out just now for a further test. Low speed fan works, at
least it comes on when the AC is engaged.
Engine runs normally. Upon shutdown, within 20 seconds or so, small
bubbles enter the reservoir from the small diameter hose that comes
from the rear of the right-side cylinder head. This stops after a
minute or two. There is gurgling in the right head, not in the left.
The air bubbles don't accumulate into any identifiable slug of air.
I let it cool and checked the tank. No air. Where is it going? No
exhaust gas contamination, either.
No leaks to the outside, at least no visible ones. No water in the
oil. No bubbles in the water while running, only after the engine is
turned off.
??
Jim
On Jun 25, 2007, at 3:41 PM, Dennis Haynes wrote:
> Absolutley not normal. System is failing to maintian pressure and
> you have
> the resultant hot spots. That gurgling is the result of boiling.
> Boiling
> means liquid to vapor state changes with the massive, unequal
> cooling. Yes,
> you are destroying gaskets and warping heads. First step is look
> for leaks,
> tahn test or rpealce the pressure cap. If that fails, than look for
> internal
> leaks.
>
> Dennis
>
>
>> From: Jim Felder <felder@KNOLOGY.NET>
>> Reply-To: Jim Felder <felder@KNOLOGY.NET>
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Gurgling after engine shutoff... normal?
>> Date: Mon, 25 Jun 2007 15:11:42 -0500
>>
>> It's hotter than hell around here, as I imagine it is in much of the
>> hemisphere. I have recently noticed that after I park the car and
>> turn the engine off, after 10 or 20 seconds I hear gurgling from the
>> coolant reservoir. The one time I bothered to look I didn't see much
>> going on except the main tank (which was full) trying to take in
>> water from the expansion tank, which was dry.
>>
>> I added water and still it gurgled, presumable it needed more to
>> "catch up" than what I put in. So, yesterday I added more.
>>
>> It still gurgles. Checked cool, the reservoir is completely full
>> without a bubble. The car doesn't overheat (doesn't even get above
>> the coolant light) except in a long line in direct heat with the AC
>> on, and the coolant light operates as if the system is normal. The
>> recent addition of water was the first time I have added any since
>> January. There is no odor or antifreeze inside or outside the car
>> that I can detect.
>>
>> Is this something that I have just now noticed that's been going on
>> all seventeen years of ownership, and I just never noticed it before?
>> Do other Vanagons gurgle like this?
>>
>> Thanks,
>>
>> Jim
>
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