[xj] Vacuum in my gas tank. What's going on?

XJ
1

Hi folks,

This question has to do with my Canadian spec. 92 Ser. III VDP V12.

When I went to fill the fuel tanks this morning I got quite a surprise. Upon
opening the first fuel tank cap (the left) I couldn’t help but notice a
clear “sucking” sound from the fuel filler hose. It was like there was a
considerable vacuum in that tank and it wasn’t relieved until after I popped
the fuel tank cap. The right tank, filled a few minutes later, was OK. Both
tanks, by the way, were very, very empty at the time.

Can anybody offer any assistance about what may be happening here? I
suspect there may be a vent problem somewhere…

Thanks again in advance.

Regards
Jeff Booth
71 Ser. III E-Type V12
92 Ser. III VDP V12===================================================
The archives and FAQ will answer many queries on the XJ series…
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2

Totally “normal”. But it may be worthwhile cleaning the valve in the front
right wing, by the charcoal cannister.
Gregory----- Original Message -----
From: “Jeff Booth” jbooth@cogeco.ca
To: xj@jag-lovers.org
Sent: Saturday, April 06, 2002 11:29 AM
Subject: [xj] Vacuum in my gas tank. What’s going on?

: Hi folks,
:
: This question has to do with my Canadian spec. 92 Ser. III VDP V12.
:
: When I went to fill the fuel tanks this morning I got quite a surprise.
Upon
: opening the first fuel tank cap (the left) I couldn’t help but notice a
: clear “sucking” sound from the fuel filler hose. It was like there was a
: considerable vacuum in that tank and it wasn’t relieved until after I
popped
: the fuel tank cap. The right tank, filled a few minutes later, was OK.
Both
: tanks, by the way, were very, very empty at the time.
:
: Can anybody offer any assistance about what may be happening here? I
: suspect there may be a vent problem somewhere…
:
: Thanks again in advance.
:
: Regards
: Jeff Booth
: 71 Ser. III E-Type V12
: 92 Ser. III VDP V12
:
:
: ===================================================
: The archives and FAQ will answer many queries on the XJ series…
: FAQs: http://www.jag-lovers.org/xjlovers/xjfaq/index.html
: Archives: http://www.jag-lovers.org/lists/search.html
:
: To remove yourself from this list, go to
http://www.jag-lovers.org/cgi-bin/majordomo.
:

===================================================
The archives and FAQ will answer many queries on the XJ series…
FAQs: http://www.jag-lovers.org/xjlovers/xjfaq/index.html
Archives: http://www.jag-lovers.org/lists/search.html

To remove yourself from this list, go to http://www.jag-lovers.org/cgi-bin/majordomo.