Date: Sun, 13 Sep 2015 08:40:42 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Thermostats...question(s)
In-Reply-To: <CA+r=Jhp1EODc63T1mqLp-1wubinx9cYmA1J=MCJNqFqxT1q-0g@mail.gmail.com>
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Yes, I meant NOT properly pressurized. The system could also pressurized but with air or vapor pockets.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Larry Alofs
Sent: Sunday, September 13, 2015 8:15 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Thermostats...question(s)
did you mean *not* properly pressurized?
On Sun, Sep 13, 2015 at 1:20 AM, Dennis Haynes <d23haynes57@hotmail.com>
wrote:
> Bubbling and gurgling in the cooling system is a sign that the system
> is properly pressurized and parts of the engine are hot enough that
> the coolant is flash vaporizing. This is a great way to cause parts to
> warp and other nasty stuff to happen. Begin with testing the pressure
> cap and making sure the system is fully filled-bled. If this continues
> you need to look for the cause of either lack of pressure or if the
> system continues getting air in it you need to find the source. This
> is often the early signs of head gasket failure or cracked heads.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> Behalf Of Don Hanson
> Sent: Saturday, September 12, 2015 2:58 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Thermostats...question(s)
>
> Is there an accepted method to test the function of one of our double
> style thermostats? I am skeptical about the proper operation of my
> currently installed one.... lately....I have had some other issues
> with cooling and recently replaced my oil/coolant heat exchanger (mine had a pin
> hole water leak to the outside). But I also noticed once recently that I
> could hear some bubbling in my coolant system when I shut the van off,
> and I have not heard the fan recently.
>
> Anyhow, I have a spare used thermostat sitting on my bench, unknown
> condition....I'd like to see if it actually works and maybe swap that
> in....If no worky, what kind or brand should I buy to get a good
> dependable part?
>
> So can I drop the spare I want to test into boiling water and measure
> it, testing for function, or some such? It would be good to know, even if
> I do just buy a replacement, that my spare is OK and working..
> I have calipers to measure mechanical things.
>