Volkswagen Golf / Golf GTI / Jetta. Manual — part 71

20-8

Repair

Manual, 2.8
Liter VR6 4V
Fuel Injection
& Ignition,
Engine Code
(s): BDF,
Repair Group
24

29 - Return

line

Blue or

with
blue
marking

Clipped

onto
side of
fuel
tank

Check

for
secure
seating

To remove

from
flange
press
release
button on
connecting
piece

From

fuel
return
pipe
on
fuel
rail:

30

-

Connector

Black,

4-pin

For

Sender

Components of fuel supply system, servicing

for fuel
gauge
-G-
and
Fuel
Pump
(FP) -
G6-

31 - 10 Nm

Components of fuel supply system, servicing

20-9

Marking on sender must align with
marking on fuel tank (arrows).

Blue or blue marked return line -1- to
union with identification -R-.

Black supply line -2- to union with
identification -V-.

Note:

After installing fuel delivery unit
flange, check that the supply, return
and breather lines are still clipped
onto the fuel tank.

Fig. 1

Installation position of
fuel delivery unit flange

Lever in rest position: Closed

Lever pushed in direction of arrow:
Open

Note:

Before installing breather valve,
remove cap from fuel tank.

Fig. 2

Checking change-over
valve

Components of fuel supply system, servicing

20-10

A) Union 1 - 1:

B) Union 1 - 2:

C) Union 1 - 2:

Fig. 3

Checking pressure
retention valve

- Check direction of valve flow:

Flow in both directions

Union -2- is closed

Flow in both directions

Union -3- is closed

Flow in only one direction

Union -3- is closed

Valve must close when a

vacuum is applied to union -1-

Components of fuel supply system, servicing