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Date:         Wed, 14 Oct 2015 14:36:04 -0600
Reply-To:     Eric Wunrow <VW@ERICWUNROW.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Eric Wunrow <VW@ERICWUNROW.COM>
Subject:      Re: Missing coolant
Comments: To: David Baronet <1947al@gmail.com>
In-Reply-To:  <CAKQWoNFUbP=8ZCWVSa8AACHzBPLDKxrVHEmxQZ-EiM1A20tBaQ@mail.gmail.com>
Content-Type: text/plain; charset=windows-1252

(only I got this, so re-sent to entire list — I often do the same thing meownself, gotta hit "Reply All…")

Dang… he's gotta be right!

Anywho, when mine doesn't work, you can draw or blow air… this part's impossible to misinterpret.

Eric Eric Wunrow Pictures 303. 988. 8717 VW@EricWunrow.com

On Oct 14, 2015, at 11:45 AM, David Baronet <1947al@gmail.com> wrote:

> Guys,....not a one way device. It pops off under overpressuring but sucks coolant back into the system when cooling off. Aone way "check" valve won't accomplish that. David > > On Wed, Oct 14, 2015 at 12:25 PM, Eric Wunrow <VW@ericwunrow.com> wrote: > > Yes, mine are from Meyle. > > > > Jim, your inline valve idea is great! > > > > Eric > > Eric Wunrow Pictures > > > > 303. 988. 8717 > > VW@EricWunrow.com > > > > > > <EW Email Sig.gif> > > > > On Oct 14, 2015, at 8:08 AM, Jim Felder <jim.felder@GMAIL.COM> wrote: > > > >> You are exactly right, the one-way feature on the valve is something I have > >> know VW shops to argue about. When I had a 2.1, I would test them before > >> leaving the parts place because so many of them didn't work out of the box. > >> The "good" ones didn't last long, either. I suspect you might be buying a > >> brand called "Meyle Germany" but that is just the brand name some company > >> bought, and they could be made absolutely anywhere. You might try the > >> dealers but good luck with that. > >> > >> One of these days, all vanagon drivers are going to be using that cap > >> simply as a connection to a one-way valve from a third party, inline > >> between the reservoir tank and the overflow tank. > >> > >> Jim > >> > >> On Wed, Oct 14, 2015 at 2:41 AM Eric Wunrow <VW@ericwunrow.com> wrote: > >> > >>> I'm a total rookie compared to you guys, but wanted to note I've had at > >>> least three expansion tank (blue) cap failures in 23,000, full-time miles > >>> over 26 months on the road. I believe the failures are somewhat related to > >>> how many heating/cooling cycles they're asked to do. > >>> > >>> I only buy the German ones, and my test is if you can both suck and blow > >>> on the cap, it's toast (please keep the jokes to yourself). > >>> > >>> My understanding is the cap should only release pressure one direction — > >>> not two. > >>> > >>> Eric > >>> Eric Wunrow Pictures > >>> > >>> 303. 988. 8717 > >>> VW@EricWunrow.com > >>> > >>> > >>> > >>> > >>> On Sep 28, 2015, at 3:27 PM, Stuart MacMillan <stuartmacm@GMAIL.COM> > >>> wrote: > >>> > >>>> Thanks Jim, the cap was replaced with an OEM cap when the water pump was > >>> done 13,000 miles ago, and the overflow tank doesn’t show any evidence of > >>> any spillage on or under it. I’m thinking small leaks too, but I’d like to > >>> narrow it down. The 2.1 has a lot more hoses than my 1.9! > >>>> > >>>> > >>>> > >>>> Stuart > >>>> > >>>> > >>>> > >>>> From: Jim Felder [mailto:jim.felder@gmail.com] > >>>> Sent: Monday, September 28, 2015 2:21 PM > >>>> To: Stuart MacMillan; vanagon@gerry.vanagon.com > >>>> Subject: Re: Missing coolant > >>>> > >>>> > >>>> > >>>> Old hoses leak microscopic amounts of coolant. Ive had it spray onto the > >>> engine in such small quantities that it would evaporate before you could > >>> see it. Tighten hoses, replace hoses is about all you can do. But you > >>> didn't mention testing the pressure cap. That can send a good deal of > >>> coolant into the expansion tank, which can drip on the road through the > >>> overflow and you won't know it. > >>>> > >>>> > >>>> > >>>> Jim > >>>> > >>>> > >>>> > >>>> On Mon, Sep 28, 2015 at 4:11 PM Stuart MacMillan <stuartmacm@gmail.com> > >>> wrote: > >>>> > >>>> Just when everything seems to be sorted out, it isn't. Son's '87 is > >>> losing > >>>> over a quart of coolant every 400 miles, and I can't find any leaks. > >>> Rear > >>>> heater has been removed, and there is no odor from the front heater. No > >>>> drips anywhere-engine plumbing, heads, transmission cooler, radiator, or > >>>> front heater valve. No evidence of coolant mixing with either the > >>>> transmission fluid or engine oil, and that much coolant would certainly > >>> foam > >>>> oil. > >>>> > >>>> > >>>> > >>>> I'm wondering if it's burning coolant, but in my experience failed > >>> sealing > >>>> rings in Vanagons lead to over pressurization of the system, and that's > >>> not > >>>> happening. It also runs great. I sometimes notice a faint smell of > >>> burning > >>>> coolant at the engine compartment vents, but I can't find anything > >>> dripping > >>>> on the exhaust when the system is pressurized. > >>>> > >>>> > >>>> > >>>> Would investing in a UV leak detection kit tell me anything? It would > >>> seem > >>>> losing this much coolant would show up somewhere. > >>>> > >>>> > >>>> > >>>> Any ideas? > >>>> > >>>> > >>>> > >>>> Stuart > >>>> > >>> > >> > > >


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