Rico, I just replaced my regulator, =
but it had
the opposite problem of yours. It was stopped up tight. I didn't =
realize
what was causing my super-rich running problem (1/2 tank of fuel in the =
final 43
miles, after which it wouldn't even run.) until I put a gauge on it and =
realized
I was running 90-plus psi fuel pressure! Yikes! Glad I had =
replaced
the fuel lines recently... It's supposed to be more like 30 or so. =
Anyway,
fresh regulator fixed me right up.
Being the curious sort, I used a hacksaw and cut the =
old one
open. (Don't try this unless you first let it dry out more than I
did...) Mine was full of scale and rust, but I could see it's =
function and
can confirm for you that it is NOT supposed to let fuel through, in =
either
direction, when the motor isn't running. If you're siphoning fuel =
through
it via the return line, it's definitely not working =
properly.
Like Ken said, it holds the pressure in the system =
for a long
time after you stop, but also stays shut when you first start, allowing =
the
pressure to build more quickly. This aspect of it also cured a =
hard
starting problem I'd had for 3 years, that I had assumed was just low
compression. The motor used to turn over about 4 times before =
starting,
now it starts instantly.
BTW, my "test gauge rig" was two used hose =
clamps, a
piece of leftover fuel line, a $1.28 hose barb and a $4 water pressure =
gauge
from Lowes. Wish I'da made it up a long time ago....
Carl
82 Vangon L, =
83 GTI, 86 Scirocco
+ + + + =
+ +
+ + + + + + + + + =
+ ++
Date: Fri, 25 Feb 2000 19:50:16
EST
From: kenneth d lewis <
kdlewis@JUNO.COM>
Subject: =
Re: Fuel
pressure =
regulator
Rico;
I
can not speculate from those symptoms. Your best bet is to put
a =
gauge on
it.
I permanently =
connected a
gauge using parts I had laying around
the garage. I left the gauge in =
the
engine compartment. My system holds
pressure for more than an hour =
after
being turned off.
Drive Safely & Good Luck
Ken
Lewis <Kernersville,NC>
86 VW crewcab;60 356B =
Coupe
+ + + + =
+ +
+ + + + + + + + + =
+ ++
Date: Fri, 25 Feb 2000 17:22:18
EST
From: Rico Dagastino <
Dagbear@AOL.COM>
Subject: Fuel =
pressure
regulator
I disconnected from the fuel filter (the large =
metal
filter between the
pump and the injectors) the hose which connects =
the filter
to the fuel pump
in order to test the fuel delivery rate of the fuel
pump. I found that rate
to be quite adequate. While =
conducting
this test I was forced to plug the
open end of the hose coming from =
the
injectors because fuel was siphoning
through the system. My =
question:
Would a properly functioning fuel pressure
regulator allow the =
reverse flow
of fuel through the system at a rate to
sufficient to cause this =
siphoning
action? If not, can this be construed as
a sign of a defective =
fuel
pressure regulator? I know this reversed flow was
not caused by =
accumulated pressure in the tank because I removed the gas cap
so as =
to allow
any pressure to vent. Would it now be appropriate to test =
the
operation
of the regulator by applying a test gauge to the line? I =
am
searching
for the cause of an intermittent dying condition not caused =
by
electrical
malfunction. Any help would be greatly appreciated.
Rico
Dagastino
Munford, TN
84 GL "Thing 1"
87 GL =
"Thing
2"