I've been having a gas smell appear in my bus lately. Where do these 
recovery tubes hook up to the gas tank?

Jamie Bishop
'72 Westy

On Sun, 4 Feb 1996 DHaynes57@aol.com wrote:

> In a message dated 96-02-04 03:31:19 EST, cstand@u.washington.edu (Craig
> Standley) writes:
> 
> >
> >Today I was looking at my bus (1974, non-FI) and noticed some weird 
> >things in the airscoops.  There seems to be some metal tubing that comes 
> >up out of the engine, bends and heads back down into the engine 
> >compartment.  This tubing is about 1/4" in diameter, and at the top there 
> >is a section that is about 1" in diameter and about 6" long.  Is it some 
> >kind of sensor or mechanical thermostat.  I know there is one under the 
> >engine, but is this part of it.  The tubing seems to be on both sides of 
> >the bus.
> >
> >Any ideas what this is?
> 
> Yes I do.  These tubes are part of the fuel Vapor revory system.  They conect
> from the top of the Gas Tank and lead back to the Carbon Canister at the top
> of your engine compartment.  They are routed way up in the air on both sides
> so that fuel can not siphpon onto a hot engine.  The carbon canister collects
> fuel vapors when the engine is not runnig.  When the engine is running, the
> combination of engine vacuum,(that valve on the air cleaner), and the cooling
> fan, send these vapors into the engine to be burned off. Hopefully, this
> syetm is still intact.  I have seen this system partially dissasembled allow
> fuel to be spilled onto the engine after overfilling the tank and then having
> the fuel expand.
>