[T3] Fuel leak on type 3 F.I. Fastback
willjahn975 at gmail.com
Wed Nov 6 08:30:59 PST 2019
I know on my 73 the fuel lines do not lay on the bottom , if fact they are
right at the top rear of the shifter opening. In order for them to rust I
would think fuel/ water had to be sitting in them for a long time with no
fuel flow . The ethanol would attract moisture.
On Wed, Nov 6, 2019 at 8:05 AM Jim Adney <jadney at vwtype3.org> wrote:
> On 5 Nov 2019 at 16:05, William Jahn wrote:
> > I didn't read he was smelling gas so it might be brake fluid and if it is
> > gas I forgot the steel lines don't have a barbs on them I know they don't
> > on the rear yet I can't recall if mine do on the front or at the tank . I
> > only replaced the ones on the engine and from the engine to the rear
> > lines. I don't know if all years were the same deal. Jim has replaced
> > than I have. I think the return at the tank has no barb nor did the
> > plastic three way fitting . Sort of a dumb idea at least on the pressure
> > side .
> Typically, the only trouble spots are the 2 ends of the pressurised tube,
> the driver's side. The tank inlet and outlets are smooth cylindrical, but
> unpressurised, except for the "head" of the gas in the tank. The Tee has
> barbs. The long tubes are simple, straight cylindrical, making the
> pressurized one hard to seal
> The ends of the long tubes are bent downward, so leaks there tend not to
> flow upward past the rubber grommets and into the interior. But I've had
> trouble at times when I pushed hoses too far up, and they got pressed
> against the grommet.
> Leaks here get more likely in cold weather and with old, hard gas hose.
> likely that new 5/16" hose and full circle clamps will fix this.
> I've never seen one of those lines rust thru, but I don't deny its
> I've worked on one car where someone had replaced the return line with an
> external copper tube, but we eventually determined that the OE line was
> and restored it to service.
> It would be helpful to remove the gas gauge sender and look inside the
> If the tank is clean, the line won't be rusty, unless there has been water
> inside the car and the line rusted from the outside, which I suspect is
> unlikely, because I'm willing to bet that this line does not lay on the
> bottom of
> the tunnel.
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
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