Skoda FABIA 2000 Workshop Manual page 95

FABIA 2000 1.4/55; 1.4/74 Engine - Mechanical Components
WARNING!
Maximum pressure of the fuel delivery unit is 7 bar
(0.7 MPa). If this pressure is reached the fuel deliv-
ery unit may be damaged.
If the nominal value of min. 3 bar (0.3 MPa) is reached:
–
Replace fuel pressure regulator.
If the nominal value of min. 3 bar (0.3 MPa) is not
reached:
–
Replace the fuel delivery unit.
Inspecting the non-return valve of the fuel pump
and holding pressure
Test conditions
•
Pressure gauge -V.A.G 1318- connected ⇒ 20-1
page 11
Note
This test simultaneously checks the tightness of the con-
nections of the fuel feed line from the fuel delivery unit
through to the connecting points of the pressure gauge
-V.A.G 1318-.
–
Shut-off cock on measuring device in position -A-
open.
–
Activate remote control until an overpressure of 3 bar
(0.3 MPa) is built up.
–
Disconnect the remote control and observe the pres-
sure drop on the manometer. The pressure must not
drop below 2.5 bar (0.25 MPa) after 10 minutes.
If the pressure drops:
–
Activate the remote control unit until an overpressure
of 3 bar (0.3 MPa) is built up, and simultaneously
close the shut-off cock on the measuring device in po-
sition -B-.
If the pressure does not drop:
–
Check the fuel rail for tightness.
If the pressure still drops:
–
Check the line connections for tightness.
If the lines are not found to be faulty:
–
Connect the pressure gauge -V.A.G 1318- with adapt-
er -V.A.G 1318/11- and -V.A.G 1318/17- to the black
feed line for the fuel filter pump (old version filter
shown with integrated fuel pressure regulator). For the
new version of the filter with disassembled fuel pres-
sure regulator the black feed line is connected to the
fuel filter border connection.
Edition 05.05
S00.5306.06.20
Removing and installing parts of the fuel supply system
B
V.A.G 1318
V.A.G 1318/17
V.A.G 1318/11
V.A.G 1318
V.A.G 1318/11
V.A.G 1318/17
A
S20-0106
A
B
S20-0105
20-1
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