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RE: Gasoline Odour (XJ6 emission control system).

To: british-cars@hoosier.cs.utah.edu
Subject: RE: Gasoline Odour (XJ6 emission control system).
From: scott@psy.uwa.edu.au (Scott Fisher)
Date: Fri, 15 Jan 93 09:50:06 WST
Subject: Jaguar Gasoline Odor

Shel writes...

>Folks-
> 
>I asked about the Jaguar Gasoline Odor question on another network, and got
>this reply from a genuine Jaguar mechanic ...
>
>[Informative article deleted...] 
>
>In the case of both vehicles the check valve must be in the system, don't
>remove it!  This valve prevents the gas from evaporating into the
>atmosphere.  Its removal also may overload the charcoal cannister which may
>cause running problems for the petrol injection system (EFI).

As far as I can tell the only problems with a saturated cannister apart
from the environmental ones is that an EFI car may run a little rich
for a few minutes after start up.   Actually the cannister has a "purge
valve" that has been callibrated to open at a certain manifold vacuum 
this pressure is achieved only at certain revs.  So the running problems are
likely to be a rich mix for approx 30 seconds some time after start-up 
once you exceed the required revs.  Not a big problem for your engine,
the environment (as has been pointed out) is another matter :-)

Regards Scott.
_______________________________________________________________________________
Scott Fisher [scott@psy.uwa.oz.au]  PH: Aus [61] Perth (09) Local (380 3272).   
             
                                                             _--_|\       N
Department of Psychology                                    /      \    W + E
University of Western Australia.      Perth [32S, 116E]-->  *_.--._/      S
Nedlands, 6009.  PERTH, W.A.                                      v       

Joy is a Jaguar XJ6 with a flat battery, a blown oil seal and an unsympathetic 
wife, 9km outside of a small remote town, 3:15am on a cold wet winters morning.
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