Re: 72 Beetle / Fuel Vacuum Hoses / Fuel Gauge Voltage Stabilizer
- From: Speedy Jim <volks_cleve@xxxxxxxxxxxxx>
- Date: Wed, 15 Jul 2009 16:42:25 -0400
Ive got a 1972 VW Beetle
A few questions that John Muirs Book has shed little light on for me.
When I open the gas cap should it be sucking air? Ive got a vacuum in
there. Its been doing this since I replaced all the gas vapor
recycling hoses. They were all original and cracked. I used vacuum
hose until I am advised on something else.
An annotated image of the front boot - fuel hoses.
The gauge indicated 1/4 tank when I ran out of gas. Instead of bending
the pivot point / guage needle I opened up the voltage stabilizer and
spread the windings apart. This resulted in the needle going way past
full and I have only used a gallon so far. By the time I get to empty
the gauge may reflect more accurately? Where do I find a replacement
There is a toggle switch on the duct work coming off of the shroud.
What is this?
An annotated photo of the engine compartment -
Congrats on your find.
No telling what the toggle does/did; it's non-stock.
Follow the wires and report back.
Your fuel system has been "hacked".
Click on #25-10 and #25-20
Canister #1 is under the right rear fender/wing.
Pipe #8 runs to the front of the car where it connects to
the piping under the bonnet.
Hose #15 supplies air to the canister to force vapors out
to the air cleaner and ALSO to prevent vacuum in the tank.
If vacuum forms, the tank could collapse and/or the engine
will starve for fuel at highway speeds.
If all the bits are missing, the best you can do is
leave a small vacuum hose from the tank open to
atmosphere (outside the car) to vent the tank.
The stabiliser/vibrator is available from most any
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