Scott, thanks. One more of the Vanagon mysteries solved!

John

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 6/18/2011 4:38 PM, Scott Daniel - Turbovans wrote:
> it goes to the evap control device.....a vacuum operated valve.
> which is hidden on the forward side of the firewall on a 2.1 wbxr
> vanagon.
>
> you will find it in the 'fuel supply' section of Bentley I believe.
>
> the valve allows gasoline fumes to be absorbed by the charcoal
> canister when the engine is off.
> when you start the engine ..vacuum from the throttle body opens the
> valve ..
> so the stored gas fumes are sucked into the engine and burned.
>
> it's just vacuum hose available at any FLAPS.
> The system has very little affect on engine operation.
> it's a smog device..
> a very good rather passive device.  No electrics involved, usually
> works 'forever'  ( though I have seen a charcoal canister where the
> charcoal is falling out of the bottom. You can see it in your right
> rear fender well area.  a tall black plastic can ) Just connect it
> with good new hose.
>
> Scott
> www.turbovans.com
>
>
> ----- Original Message ----- From: "John Rodgers" <inua@CHARTER.NET>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Saturday, June 18, 2011 1:57 PM
> Subject: Throttle Body Question
>
>
>>  I have an '88GL, 2.1L WBX, manual tranny. The fuel system is Digifant.
>>
>> The throttle body lays transverse over the engine. From the Right hand
>> side of the firewall, through a hole, there is a plastic tube that comes
>> across and attaches by a little rubber hose to a nipple on the forward
>> (firewall) side of the throttle body. The hose is rotted through and
>> needs replacing.
>>
>> I cannot find a picture with that nipple showing, nor that plastic tube.
>> May have just missed it in Bentley, but what is the purpose of that tube
>> to the throttle body, and where does it go/come from through the
>> firewall? How does it affect engine operation?
>>
>> Thanks,
>>
>> John
>>
>> --
>> John Rodgers
>> Clayartist and Moldmaker
>> 88'GL VW Bus Driver
>> Chelsea, AL
>> Http://www.moldhaus.com
>
>
>