Aussieveedubbers · Tech Talk

Holley fuel regulator ... adjusting pressure

https://forums.aussieveedubbers.com/threads/64616/holley-fuel-regulator-adjusting-pressure

68AutoBug ·

Well I've had a holley fuel pressure regulator on My engine for over a year, but no instructions came with it...

anyway I had the grubscrew screwed out about 10mm
and was told that to lower the pressure You screw the grubscrew down...
which I did... right down...
anyway, I've had no problems, until I fitted a fuel pressure gauge to the regulator a couple of days ago.
the gauge looked like it wasn't working...

anyway, tonight I went to drive to the shops and after about 60 meters, the engine lost power and pressing the pedal did nothing, maybe made it worse...
I made it to the first intersection, where the car stopped,
well the engine stopped, and I rolled down to a street lamp..

I looked at the engine [ignition still on] and I could see the fuel pressure gauge going 5-6 psi , as the electric fuel pump was still working...'
I could smell fuel, and after taking the air cleaner off I could hear fuel...
I looked at the exhaust pipes and could see fuel fumes coming out of them....
I turned the ignition off.... also turned the pump off...

when the key was turned, the engine was locked up..
with fuel.... so I waited a few minutes and pushed the accelerator to the floor and it started...
so i drove home switching the pump on & off...

What I'm wondering, is why the regulator started delivering high pressure to the carby after all this time..

I looked on the net and found that the grubscrew should be screwed out to lower the pressure...
I just did that, and the gauge dropped to 2 PSI...

Now I just have to change the oil, tomorrow...
as it will be diluted by the excess fuel...

Lee

http://community.webshots.com/user/vw68autobug