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montanasurfer Samba Member
Joined: March 06, 2014 Posts: 319 Location: United States
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Posted: Mon May 22, 2023 5:07 pm Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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For folks who have done this in California.... Any issues passing the visual inspection for smog? _________________ 1987 Vanagon GL - Wolfsburg Edition |
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vanis13 Samba Member
Joined: August 15, 2010 Posts: 3101 Location: ABQ NM USA.... Except when not
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Posted: Mon Aug 08, 2022 5:23 pm Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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?Waldo? wrote: |
I don't 'top it off'. I never have and never plan to. However, I don't see how the addition of the Perko valve would prevent topping off the fill tube if that's important to you. |
I was thinking of the ping pong ball solution... Though, even with that my logic may be faulty. _________________ 83.5 Westy with Subaru 2.5, 4 spd manual, center seat, COLD A/C on 134a!, Winter camp heated with an Espar B4 gasoline furnace
www.SuperVanagon.com - some stuff I make |
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?Waldo? Samba Member
Joined: February 22, 2006 Posts: 9752 Location: Where?
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Posted: Mon Aug 08, 2022 4:36 pm Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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I don't 'top it off'. I never have and never plan to. However, I don't see how the addition of the Perko valve would prevent topping off the fill tube if that's important to you. |
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vanis13 Samba Member
Joined: August 15, 2010 Posts: 3101 Location: ABQ NM USA.... Except when not
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Posted: Mon Aug 08, 2022 4:28 pm Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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I like filling the filler tube for extra range. _________________ 83.5 Westy with Subaru 2.5, 4 spd manual, center seat, COLD A/C on 134a!, Winter camp heated with an Espar B4 gasoline furnace
www.SuperVanagon.com - some stuff I make |
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?Waldo? Samba Member
Joined: February 22, 2006 Posts: 9752 Location: Where?
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Posted: Mon Aug 08, 2022 4:00 pm Post subject: Re: Vanagon Fuel Fill-up Puke - SOLVED! |
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Mckinleyvillian wrote: |
long question short, is this perko check valve worth $25? |
As far as the cost to prevent the gasoline burp, I find that to be a fantastic value! IMO it's totally worth it just to prevent the pollution. Preventing the fire hazard and the stink is gravy. It has worked fine for me since I originally installed it.
Instead of spending $25 on the Perko valve AND $$ on the 1-1/2" hose, you could instead copy the stock design. Cut the end of the fill tube so that a ping pong ball will stop the flow. You could probably make the cage out of decent gauge steel wire. Before I found the Perko valve I considered doing so. I tend to think $25 is a cheap price for the time involved in reinventing the wheel (or finding out that ping pong balls dissolve in gasoline...). YMMV. |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32637 Location: Reading Pennsylvania
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Mckinleyvillian Samba Member
Joined: July 22, 2021 Posts: 506 Location: Macktown, CA
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Posted: Mon Aug 08, 2022 3:36 pm Post subject: Re: Vanagon Fuel Fill-up Puke - SOLVED! |
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djkeev wrote: |
DanHoug wrote: |
dobryan wrote: |
This is a great solution.
My '87 puked until I retrofitted with a filler tube from a '90 with the ping pong ball cage. |
reviving the thread since it was referenced... this was on my '89 when i did the tank refurb.
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That was VW's fix for the fuel burp problem.
My 90 has that same float ball only the ball had escaped from it's cage!
I retrieved it and popped it back in.
Will it come out again?
Probably ......... |
long question short, is this perko check valve worth $25? _________________ so many roads i know
all i want is one to take me home
85 Vanagon GL 1.9 stick |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32637 Location: Reading Pennsylvania
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DanHoug Samba Member
Joined: December 05, 2016 Posts: 4800 Location: Bemidji, MN
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Posted: Mon Aug 08, 2022 12:38 pm Post subject: Re: Vanagon Fuel Fill-up Puke - SOLVED! |
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dobryan wrote: |
This is a great solution.
My '87 puked until I retrofitted with a filler tube from a '90 with the ping pong ball cage. |
reviving the thread since it was referenced... this was on my '89 when i did the tank refurb.
_________________ -dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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thebigben Samba Member
Joined: October 22, 2020 Posts: 94 Location: California
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Posted: Mon Jun 14, 2021 1:47 pm Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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Anyone have any extra hose they'd be willing to ship or sell me? _________________ Ben
'85 2WD Westy w/ Peloquin TBD + 2.2 Subi (Kurt Vannegut) |
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DuncanS Samba Member
Joined: October 17, 2013 Posts: 4583 Location: New Hampshire
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32637 Location: Reading Pennsylvania
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Vanuber Samba Member
Joined: February 16, 2020 Posts: 411 Location: Virginia
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Posted: Fri Apr 16, 2021 2:38 pm Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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Installed the Perko backflow preventer this week. Works like a charm! Thanks to this thread for the tips. _________________ '85 Westfalia 1.9L
'72 BMW R75/5
'71 BMW R75/5
'02 Subaru Forester 2.5L |
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jimf909 Samba Member
Joined: April 03, 2014 Posts: 7480 Location: WA/ID
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Posted: Fri Apr 16, 2021 9:53 am Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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DuncanS wrote: |
And high speed delivery pumps?
Duncan |
Fuel replenishment is the least of my problems when I pull into the pit.
But yes, even though I recall the first gas station nozzle seal bellows contraption in 1989 (it's a specific memory of trying to fill a motorcycle gas tank with the newfangled device in St. Louis in March of 1989), my guess is that VW did not design the system with this in mind. _________________ - Jim
Abscate wrote: |
Do not get killed, do not kill others.
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Current: 1990 Westy Camper - Bostig RG4, 2wd, manual trans w/Peloquin, NAHT high-top, 280 ah LFP battery, 160 watts solar, Flash Silver, seam rust, bondo, etc., etc.
Past: 1985 Westy Camper - 1.9 wbx, 2wd, manual trans, Merian Brown, (sold after 17 years to Northwesty who converted it to a Syncro). |
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DuncanS Samba Member
Joined: October 17, 2013 Posts: 4583 Location: New Hampshire
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Posted: Fri Apr 16, 2021 6:11 am Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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In planning an aux tank in the syncro location for my 2WD, I have spent a fair amount of time looking at the fuel delivery systems and the attendant venting. Although I could be talked out of it by someone who knows more than I do--98% of the world--I think "burping" ia a venting issue. None of the vents which are small and designed to allow gas to fill the DS raised area on the far side from the fill or feed the charcoal canister, is/are large enough to provide fill venting. The OG designed method for this is to provide a parallel large line along side of the fill tube. However, this vents below the area of the restricted pump nozzle orifice--the hole you stick the gas pump into. So for any air to get out of the tank as it is being filled, the air ultimately has to go around the nozzle and into the atmosphere.
I know the DOT and EPA are worried about fumes exiting to the atmosphere which is why the rubber bellows were introduced and still exist in some states. So In my opinion, that's where the problem lies. The tank simply can't vent fast enough such that the air pressure builds until it has to burp to release the air and gas comes up too. I''ll bet if any of us were to enlarge the restricted hole size, the problem would go away. When I use my rear tank fill to provide fuel to both tanks, this is what I plan to do. In addition, my large fill vent will exit from the tank itself and not low down on the fill tube. If the gas fumes are venting to the atmosphere anyway, how can this be a problem? And I'll bet it will help filling where the bellows are used as well.
And high speed delivery pumps?
Duncan |
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dobryan Samba Member
Joined: March 24, 2006 Posts: 16508 Location: Brookeville, MD
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32637 Location: Reading Pennsylvania
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Surferboy120 Samba Member
Joined: April 13, 2014 Posts: 90 Location: Dallas
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Posted: Sun Feb 28, 2021 8:00 am Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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djkeev wrote: |
Now if only those valves hadn't slid into being unobtainium!
When my factory check ball escapes the cage again, I know where you live! I'll be coming to get my valve back!
Dave |
Ha ha ha thats true you have my address he he he!.... I thought someone said the manufacturer still made them but we couldnt find any distributers who carried them? If thats the case doing a small bulk purchase would probably still work.
When the day come just let me know Dave and I will do the search with you. |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32637 Location: Reading Pennsylvania
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Surferboy120 Samba Member
Joined: April 13, 2014 Posts: 90 Location: Dallas
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Posted: Sat Feb 27, 2021 3:17 pm Post subject: Re: Vanagon Fuel Fill "BURP" - SOLVED! |
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djkeev wrote: |
Glad it worked for you!
Not enough happy endings in the world today.....
Dave |
Agreed Dave. Was nice to be driving the van again and it just did everything it should. |
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