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SRUpcMike
Samba Member
Joined: April 18, 2018
Posts: 2
Location: Va
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 Posted: Wed Apr 18, 2018 5:58 pm Post subject: Fuel Vapor Canister / Evaporation Chamber |
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My 68 Bug Does not have a Fuel Vapor Canister or Evaporation Chamber. I think I broke the damn internet looking for one...
Can anyone please point me in a good direction.. At this point I will take whatever solutions I can get.
Mike |
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Helfen
Samba Member
Joined: January 19, 2009
Posts: 3450
Location: Vulcania
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| Posted: Wed Apr 18, 2018 8:34 pm Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| This sounds kind of lame coming from a ex VW line and unit mechanic of the early 70's who should know, but did 1968 beetles in the U.S. come with a fuel vapor canister?? The reason I say this is because U.S. cars including California didn't have them until the 1970 model year. |
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 34021
Location: Conejo Valley, CA
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| Posted: Wed Apr 18, 2018 8:39 pm Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| Even if you had those two canisters, the system probably wouldn't work. The metal lines leading to the back of the car are probably rusted shut, and won't flow any fumes. You may as well use the older system of an overflow hose leading through an arc to the ground. |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51153
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Wed Apr 18, 2018 9:45 pm Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| Helfen wrote: |
| This sounds kind of lame coming from a ex VW line and unit mechanic of the early 70's who should know, but did 1968 beetles in the U.S. come with a fuel vapor canister?? The reason I say this is because U.S. cars including California didn't have them until the 1970 model year. |
Late 1970 was the first time the canister evap system started to show up, before that it just vented through the cap or near the filler to the atmosphere.
_________________
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Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
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Helfen
Samba Member
Joined: January 19, 2009
Posts: 3450
Location: Vulcania
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| Posted: Wed Apr 18, 2018 9:49 pm Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| busdaddy wrote: |
| Helfen wrote: |
| This sounds kind of lame coming from a ex VW line and unit mechanic of the early 70's who should know, but did 1968 beetles in the U.S. come with a fuel vapor canister?? The reason I say this is because U.S. cars including California didn't have them until the 1970 model year. |
Late 1970 was the first time the canister evap system started to show up, before that it just vented through the cap or near the filler to the atmosphere. |
Yeah, That's what I thought. Heck I had my smog license back then. I was sure a manufacturer wouldn't do anything about emissions unless they had to! |
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SRUpcMike
Samba Member
Joined: April 18, 2018
Posts: 2
Location: Va
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| Posted: Thu Apr 19, 2018 11:06 am Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| That sounds good to me... That explains why there was not one there to begin with But what should have been there?? I just have 2 tubes coming off my gas tank? |
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Helfen
Samba Member
Joined: January 19, 2009
Posts: 3450
Location: Vulcania
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| Posted: Thu Apr 19, 2018 11:29 am Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| SRUpcMike wrote: |
| That sounds good to me... That explains why there was not one there to begin with But what should have been there?? I just have 2 tubes coming off my gas tank? |
You mean you have one tube to the fuel pump and one vent tube. That would be two tubes.
BTW, even back to at least 1963 on GM cars with A/C there are three tubes. One is the vent, one is the fuel supply to the fuel pump, and the third is the fuel filter return line which is between the fuel pump and the carburetor. How that works is when the float in the carburetor shuts off fuel when it's full, the pump keeps pumping to the filter and the filter has a return line to the tank so the fuel is continuously recirculated to the tank keeping the lines and pump with constant supply of cool fuel from the tank preventing vapor lock in the lines. |
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KTPhil
Samba Member
Joined: April 06, 2006
Posts: 34021
Location: Conejo Valley, CA
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| Posted: Thu Apr 19, 2018 12:59 pm Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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61SNRF
Samba Member
Joined: March 29, 2009
Posts: 4657
Location: Whittier 90602
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| Posted: Sun Apr 22, 2018 8:02 pm Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| SRUpcMike wrote: |
| That sounds good to me... That explains why there was not one there to begin with But what should have been there?? I just have 2 tubes coming off my gas tank? |
Evaporative Emission Control was first required in US 1971 model year, so a 68 should not have any such equipment.
There is a chance your gas tank has been replaced though, possibly with a universal replacement version. Where are these two tubes located?
For definitive answers to your quandary I'd suggest posting pictures of tubes in question.
_________________
-Bruce
An ounce of prevention is worth a pound of cure. |
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Helfen
Samba Member
Joined: January 19, 2009
Posts: 3450
Location: Vulcania
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| Posted: Sun Apr 22, 2018 8:52 pm Post subject: Re: Fuel Vapor Canister / Evaporation Chamber |
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| 61SNRF wrote: |
| SRUpcMike wrote: |
| That sounds good to me... That explains why there was not one there to begin with But what should have been there?? I just have 2 tubes coming off my gas tank? |
Evaporative Emission Control was first required in US 1971 model year, so a 68 should not have any such equipment.
There is a chance your gas tank has been replaced though, possibly with a universal replacement version. Where are these two tubes located?
For definitive answers to your quandary I'd suggest posting pictures of tubes in question. |
1970 in California |
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