Volkswagen Passat 1995 Official Factory Repair Manual page 1716

Motronic Fuel Injection and Ignition system, component layout
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW...
If the residual pressure drops below 2.5 bar:
- Start engine and let idle.
- After the pressure has built-up, switch off the
ignition and at the same time clamp-off the
return line (blue markings) on fuel rail.
- Observe pressure drop on gauge.
If pressure does not drop:
- replace fuel pressure regulator
item 14 .
If the pressure drops again:
- Check fuel pump check valve:
Repair Manual, 2.8 Liter VR6 2V Engine
Mechanical, Engine Code(s): AAA, Repair Group
20
- Check hose connections, O-rings on fuel rail and
fuel injectors for leaks.
- Check pressure gauge for leaks.
Note:
Before removing the pressure gauge, release the
fuel pressure by opening the shut-off lever. While
doing this hold a container over the connection.
Page 53 of 59
24-40
Page 24-15 ,
6/12/2004