Date: Mon, 17 Mar 2008 16:29:37 -0700
Reply-To: VW Doka <vw.doka@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: VW Doka <vw.doka@GMAIL.COM>
Subject: Re: Fuel Tank Weirdness
In-Reply-To: <47DEF8B6.2090400@earthlink.net>
Content-Type: text/plain; charset="iso-8859-1"
Okay... here you go:
http://www.autostadtwest.com/docs/033_02.pdf
That's the 1989 USA version (ETKA). Exactly the same by the way.
The charcoal canister is absolutely supposed to be part of a closed
evaporitve system. There is no way it would meet the EPA requirements if it
wasn't.
I make these vans U.S. legal as part of my business and the EPA lab is very
stringent on a vehicle having a sealed evaporative system. No exceptions.
The California smog test is far less involved and I doubt that 99% of the
smog techs would catch the fact that the canister is vented to atmosphere.
Cheers,
Jeff
-----Original Message-----
From: Mark Drillock [mailto:drillock@earthlink.net]
Sent: Monday, March 17, 2008 4:03 PM
To: VW Doka
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: Fuel Tank Weirdness
That is a Digijet illustration, not a USA model.
I have seen a few USA Syncros without any port on the aircleaner box for
the charcoal vent hose that 2wd 2.1s have.
Mark
VW Doka wrote:
> Keith,
>
> No charcoal cannisters should vent to the atmoshpere (that is bad). They
> should always be recirculated back into the intake. Even '70s era VW bugs
> had a closed system for the charcoal cannister. Syncros are no exception.
>
> This diagram from ETKA shows the proper routing for the syncro:
>
> http://www.autostadtwest.com/docs/033-02.pdf
>
>
> Cheers,
>
> Jeff
>
>
>
> On Mon, Mar 17, 2008 at 10:30 AM, Keith Ovregaard <kovregaard@comcast.net>
> wrote:
>
>> Thanks guys for your feedback.
>>
>> I was hoping that I would not have to remove the tank, but It does
>> seem that's where the problem exists. Dropping a syncro tank does not
>> sound like fun and I think I'd have to get my mechanic to handle that
>> task. There goes more $$!!!
>>
>> The filler and vent hose that runs to the filler neck are sealed well
>> at that end. As Ken mentioned, the question is what's happening at the
>> other end of that vent hose. If there is a kink and/or bad seal where
>> it enters the top of the tank, that would certainly explain the poor
>> filling and fumes. BTW, all of the fuel station pumps I've ever used
>> have had trouble getting the last few gallons in the tank, so it's not
>> the pumps fault.
>>
>> One thing I have not tried is to disconnect the vent hose at the
>> filler and blow air into it to see if there is good flow into the
>> tank. There should be air coming back out the filler when I do that,
>> right?
>>
>> Oh, and thanks to Jeff for bringing over his syncro. We found out that
>> his WBX'r had the bottom vent hose of the charcoal filter exhaust to
>> atmosphere, not into air cleaner, Bentley mentioned. Also, his Subaru
>> conversion charcoal filter vents to atmosphere, so no issues there.
>> Must be that the non-syncro models vented to the air cleaner for some
>> odd reason.
>>
>> Keith O
>> 90 Westy Syncro (VikingWagen)
>>
>>
>>
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