Date:         Thu, 28 Apr 2005 19:38:41 -0800
Reply-To:     "Tom L. Salicos" <TomSalicos@COMCAST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Tom L. Salicos" <TomSalicos@COMCAST.NET>
Subject:      Re: Charcoal canister on 2.1 digifant engines?, page 20.33
Comments: To: Martine Boudreault <martine.boud@VIDEOTRON.CA>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
              reply-type=original

The gas tank has vents on top that connect to the top of the charcoal
canister.  Fuel vapors are absorbed by the charcoal in the canister.  When
the vehicle is running, the vapors are pulled out of the canister by the
engine's vacuum, into the intake manifold where they mix with the intake air
and are burned.

The bottom of the canister has a "fresh air" tube that may be shown going to
the air filter, and that makes sense, since the "purged" vapors will be sent
to the engine with the rest of the intake air.  However, on my Syncro, the
tube seems to be just stuck up into the body and does not look like there is
anything for it to actually connect to up there.

Here's a link to some theory that will qualify you as a master mechanic:
http://www.autoshop101.com/forms/h62.pdf

I think the tube is just stuck up into a presumably clean location to pick
up the air that will be used to purge the vapors from the canister.  My vent
lines for the tranny, etc, were also just stuck up into the body.

I can't speak for the lifetime of the charcoal, but I think it is one of
those things that, if it fails, nothing will act differently, so no biggie
(Except that the polar ice caps will melt and the shorelines of the world
will be flooded).

Tom Salicos

----- Original Message -----
From: "Martine Boudreault" <martine.boud@VIDEOTRON.CA>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, April 28, 2005 3:09 PM
Subject: Re: Charcoal canister on 2.1 digifant engines?, page 20.33


> Have been wondering what this canister is used for?  Do we need to clean
> it
> or change it?
> Thanks.
> Joel
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf Of
> Paul Guzyk
> Sent: 28-Apr-05 12:06
> To: vanagon@GERRY.VANAGON.COM
> Subject: Charcoal canister on 2.1 digifant engines?, page 20.33
>
> On page 20.33 Bentley shows a hose going from the bottom of the
> charcoal canister to the air cleaner.  On my 87 van it looks like the
> bottom hose is going back to the fuel (or fuel expansion) tank.
>
> I know on 1.9 engines the charcoal canister tube has an obvious
> connection to the air filter, but where does it connect to on the
> 2.1's?
>
> Or is Bentley wrong here?