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Date:         Sat, 16 Aug 2014 09:12:33 -0400
Reply-To:     Larry Alofs <lalofs@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Larry Alofs <lalofs@GMAIL.COM>
Subject:      Re: Don't top off gas tanks
In-Reply-To:  <025201cfb90f$5cdab9c0$16902d40$@gmail.com>
Content-Type: text/plain; charset=UTF-8

Or maybe the pump nozzle works like this:

http://auto.howstuffworks.com/fuel-efficiency/fuel-consumption/gas-pump-full-tank.htm

On Sat, Aug 16, 2014 at 1:03 AM, Stuart MacMillan <stuartmacm@gmail.com> wrote:

> That happens to me sometimes as well, and I have a new tank and all the > plumbing. > > It's all about pump flow speed. Gas pumps send rapid pulses of air down > the fill pipe and can detect the frequency change of the pulses bouncing > back, which gets faster as the fuel rises in the fill pipe. Kind of like > air radar. Sometimes fuel just rises in the neck too fast for the system to > work properly. I also think the camel hump tank Vanagons have contributes > to this (not in the Syncro tank though, which is designed to hold fuel and > not to have an obsolete heater duct pass through). > > That's why position in the neck and fill speed can have a dramatic effect, > and it's really about slowing down flow for the last gallon or so. > > Stuart > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf > Of PB > Sent: Friday, August 15, 2014 7:07 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Don't top off gas tanks > > Great thread! I've been meaning to ask about this. When I put gas in my > 90 Westy automatic, the pump doesn't stop, and the gas spills out exactly > as if I had attempted to top it off. It wasn't always this way, but it > seems to be getting worse each time. What needs to be fixed? I guess in > the meantime I guess I should aim for a 3/4 tank "fillup," and not wait for > the pump to stop. After the spilled gas dries, there are no fumes. I live > in Cali, where the pumps are all self-service. > Patti > 90 Westy automatic > > > On Fri, Aug 15, 2014 at 5:30 PM, OlRivrRat <olrivrrat@comcast.net> wrote: > > > James > > > > Actually the Vanagon Evap'System is designed to deal with > > LiquidGasoline ~ Each ExpansionTank has a ReturnHose from its low > > > > point back to the GasTank & in a lot of cases it is ThoseHosesAlone > > that are the Cause of The GasFumeSmell on FillUp even if you don't > > > > TopItOff as their ConnectionPoint to the GasTank is FairlyLow ~ > > > > > > > > > > > > ORR ~ DeanB > > > > On 15 Aug , 2014, at 4:17 PM, James wrote: > > > > > Dean, > > > > > > Frank Condelli found one of the two plastic vapor canisters above > > > the > > front wheels was cracked this spring and he patched it, as those > > beasties are NLA. Haven't had the other one down to look at it. > > > > > > But this is not first vehicle I've had that gives gas fumes after > > refuelling if the tank is filled too high - have had that with other > > VWs, Toyotas, a Dodge, and my mother's Pontiac. Filling a gas tank to > > the brim just overwhelms the evaporative emissions system, which is > > designed to control a certain amount of vapor, not liquid. > > > > > > James > > > Ottawa, ON > > > > > > > > > > > > > Date: Wed, 13 Aug 2014 13:41:17 -0600 > > > > From: OlRivrRat@COMCAST.NET > > > > Subject: Re: Don't top off gas tanks > > > > To: vanagon@GERRY.VANAGON.COM > > > > > > > > James > > > > > > > > If all of your GasTank & ExpansionTank > > > > Seals&Grommets&ConnectingHoses > > are In GoodShape & DoingTheirJob Properly you ShouldNot > > > > > > > > get any GasFumeSmells even if you FillItToTheBrim ~ You should > > > > look > > into what might be leaking & get it replaced or Just Do a Complete G'T' > > > > > > > > Reseal ~ > > > > > > > > ORR ~ DeanB > > > > > > > > On 13 Aug , 2014, at 1:09 PM, James wrote: > > > > > > > > > Hi Roy, > > > > > > > > > > If you read your owner's manual, you are NOT supposed to 'top off' > > the tank in a Vanagon - you are to stop fueling when the pump kicks > > out the first time, according to VW. There's very little vertical > > height between the top of the gas tank in our beloved vans and the > > evaporation control tanks and gear - I asssume that's why the warning. > > Certainly on our '91 if I top off the tank (only did it once) I get > > strong gas fumes, but if I stop when the pump kicks out, then the > > fumes don't happen (except on really hot days, if I park soon after > fueling). > > > > > > > > > > James > > > > > Ottawa, ON > > > > > > > > > >> Date: Sat, 9 Aug 2014 02:34:18 -0300 > > > > >> From: RNicholl@NBNET.NB.CA > > > > >> Subject: Fresh water tank leaking via vent. > > > > >> To: vanagon@GERRY.VANAGON.COM > > > > >> > > > > >> All, > > > > >> > > > > >> I seem to recall very topic being posted to the list not that > > > > >> long > > ago, but seem unable to find it searching my Vanagon folder ... I > > apologise in advance for the redundancy. > > > > >> > > > > >> The 3.5 year old and I have been on the road for almost a week > > > > >> in > > our new-to-us '88 Westfalia ... which my son has aptly and > > affectionately named "The Hyena" {Sorry Don.}. Things are well > > mechanically thus far - the only issue is the lines to the overflow > > tanks need to be replaced. I bought some line in Calgary and will > > attend to it, the first chance I get. In the interim, you stop filling > when the pump kicks out. > > > > > > -- > > *♪♫**♥**♫♪♪♫**♥**♫♪♪♫**♥**♫♪♪♫**♥**♫♪* > If it's not on my Smart Phone, it doesn't exist... > ●▬▬▬▬▬▬ஜ۩۞۩ஜ▬▬♥▬▬▬ஜ۩۞۩ஜ▬▬▬▬▬● >


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