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Date:         Mon, 9 Sep 2013 14:35:40 -0500
Reply-To:     mcneely4@COX.NET
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dave Mcneely <mcneely4@COX.NET>
Subject:      Re: A Different Coolant Problem
Comments: To: Tom Carchrae <tom@CARCHRAE.NET>
In-Reply-To:  <P7VY1m00X08X5Fr017VZeW>
Content-Type: text/plain; charset=utf-8

Tom, if the pressure cap is leaking, then air can enter it just as coolant can escape. mcneely

---- Tom Carchrae <tom@CARCHRAE.NET> wrote: > This is not a different issue - this is my cooling issue.... :) > > I have a question to ask the experts regarding the bad cap theory. I get > how the fluid ends up in the overflow tank - but if it just a cap, where > does the air/gas come from the displaces the coolant - and why does it not > pull the coolant back into the pressure tank when it cools? > > To Richard; if you replace the cap, and then start having exploding > hoses/heater cores/plastic connectors/etc - then you are probably in the > realm of the head gasket/cracked head world. I believe you can do a quick > and dirty test of the pressure cap by simply squeezing the coolant hoses > after the van has been running - are they stiff and inflated, as compared > to squishy when the van is cool. > > Tom > > > > > On Mon, Sep 9, 2013 at 4:44 AM, Dennis Haynes <d23haynes57@hotmail.com>wrote: > > > Make sure the pressure cap is functioning properly. It has to be able to > > hold the system under pressure. After that you have the classic symptoms of > > combustion gasses getting into the cooling system. The usual causes are > > loose heads/failed internal gaskets or a cracked head. You need to make > > sure > > that coolant isn't leaking back into the cylinders. Even small amounts of > > coolant getting into the cylinders and then the oil will do damage. > > > > Dennis > > > > -----Original Message----- > > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of > > Richard Golen > > Sent: Monday, September 09, 2013 7:18 AM > > To: vanagon@GERRY.VANAGON.COM > > Subject: A Different Coolant Problem > > > > Dear List Members, > > > > Here's a coolant problem for you to ponder. Recently, on my 87 Westy, after > > being driven on the highway for an hour or more, the overflow tank gets > > completely filled. Sometimes, the coolant level is so high that coolant > > sprays from the vent hole on the top of the tank. > > > > The tank slowly goes back to normal level if the van sits for a day or so, > > or if I let it idle for a while after the engine is cooled down. > > > > While driving, the temp gauge is in its normal position. I've also bled the > > system a couple of times using a "bong". > > > > Any ideas as to what could be causing this? > > > > Thanks in advance. > > > > Ric > > Sent from my iPad > >

-- David McNeely


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