Fuel Pressure Regulators - Test Procedure & Specifications

AIR COOLED AFC

- connect gauge US 1076 to fuel ring main

- disconnect hose between intake air distributor and pressure regulator

- start engine and run at idle

 pressure should be: 2.5 bar (36 psi)

- re-connect hose

 pressure (at idle) must drop to approx. 2.0 bar (29 psi)

If pressure too low, check fuel pump delivery rate

If pressure too high, check return line

If readings still incorrect, replace pressure regulator

WATER COOLED - DIGIJET

- run engine at idle speed and check pressure

Specifications:

bar (psi) vacuum hose 2 (shown in above illustration)
approx. 2.0 (29)
approx. 2.5 (36) connected
disconnected

Copied from my Bentley CDROM pp. 24-5 (AFC) and 24-25 (Digijet)

Good luck

Tim Hannink
Goldibox - 1987 Vanagon Camper, Wolfsburg Edition
Winter Park, Florida
http://home.earthlink.net/~tjhannink/
http://photos.yahoo.com/tjhannink Vanagon Album

----- Original Message -----
From: Stan Wilder <wilden1@JUNO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, June 05, 2002 8:57 AM
Subject: Fuel Pressure Regulators

> I need to know two things about some fuel pressure regulators from a
> Bentley.
> 1980 - 1983 Air Cooled Vanagon pressure regulators, what are the test
> pressures?.
> 1984 - 1991 Waser Boxers Vanagon pressure regulators, what are the test
> pressures?
>
> Stan Wilder
>
> ________________________________________________________________
> GET INTERNET ACCESS FROM JUNO!
> Juno offers FREE or PREMIUM Internet access for less!
> Join Juno today!  For your FREE software, visit:
> http://dl.www.juno.com/get/web/.