Hi Geoff,
Aha! One I actually know the answer to!
Let me guess. The car won't start after you have been driving it. The
problem is a lot worse in hot weather, or if the car is left in the sun?
It's that bloody silly smog system again. Unburnt petrol vapour is adsorbed
in the mysterious absorbtion canister thingy (or pair, depending on model),
and supposedly returned to the carb to be burnt, or back to the fuel tank
via the strange little tank on the inside right of the boot.
If you have any kind of blockage/impediment in the fuel return line, then
the car vapour-locks, and won't start. These blockages can be of many kinds,
including
-a blocked/broken vent cap on the tank (you do have a venting cap on the
tank, rather than a non-venting DPO replacement?).
-crud in the vapour line between the fuel tank, and the funny tank in the
boot, or crud in the little tank (sorry no manual, can't remember the proper
terms), or crud in the line between tank and resorbtion canister.
-rotted out hoses (petrol vapour does bad things to rubber over the years)
that have either collapsed on the inside or kinked. This was my problem.
10cents for a new bit of hose, and i NEVER had the car fail to start again
(well from this problem anyway). There is hose in the boot, and hose running
from the absorbtion canister to the vapour line itself. The latter has to
make a sharp short turn, so i'd check that first.
IMHO, YMMV, etc, my advice would be to first check for kinked/rotted hoses
in this system. replace as necessary. check the vent cap. If these aren't
your primary problem, at least you have cleared up any secondary confusing
problems. Next time the car fails to start, take the petrol cap of the fuel
tank, if you get a big hiss of pressure this is probably the problem...
replace the cap and try again. if it starts now, then you know that your
problem is probably the cap. There are lots of places along the system where
you can unhook a hose, allow any built-up pressure to escape, reattach the
hose, (ALLOWING ANY PETROL VAPOUR TO DISAPPATE FIRST OF COURSE), and try
starting the car. this should allow you to physically locate the section of
the system which is blocked. If it appears to be a section of vapour return
line, then disattach the line at BOTH ends and blow it through with
compressed air. Take great care not to blow compressed air through any line
attached to the fuel pump or the fuel pump will die.
I hope that helps... as with any work on the fuel system be extremely
careful with petrol vapour and sparks etc.
incidentally what are the symptoms of buggered adsorbtion pads... Max,
Laurie, Ed? No obvious jokes please.... that's my department!
;-)
cheers
Dr. Joe
-----Original Message-----
From: Geoffrey Gallaway
To: mgs@autox.team.net
Sent: 7/22/00 11:25 AM
Subject: Gurgling Sound coming from back of car
Some people may know of my fuel starvation problems with my 70 BGT.
While
sitting in a parking lot, waiting for someone today, it died as usual. I
didn't attempt to turn it back on since I didn't know how long it would
be
till the person arrived. About a minute after it had died, I heard a
gurgling sound come from the back right of the car for a few seconds.
Once
the person arrived and I started to drive, the fuel starvation problem
was
absolutely horrible, dying at almost every light and taking a few
seconds
to start again. Now, I know there is a large metal cannister in the
right
back of the car (where the gurgling sound came from). What does this
cannister do and what might it have to do with my car dying and why
would
it make a gurgling sound? If it is the cause of the problem, can I
remove
it, fix it or do I need a new one?
Thanks for the advice,
Geoff
--
Geoffrey Gallaway || Everything I say is a lie.
geoffeg@sloth.org ||
D e v o r z h u n || Note for the humor impared: This is a joke.
|