Skoda Octavia II 2004 Workshop Manual page 182

Octavia II 2004 ➤ , Octavia II 2010 ➤
2.0/100; 103 kW TDI PD Engine - Edition 01.2018
– Connect tester for tandem pump - VAS 5187 - with hollow
screw -VAS 5187/1A- as shown.
– Install air filter and intake hose and air guide hose.
– Connect air mass meter - G70- .
– Start engine and increase engine speed to 4000 rpm.
– Observe displayed pressure on the tester for tandem pump .
• Specified value: at least 1,05 MPa (10,5 bar).
If the measurement is less than the specification:
– Clamp fuel return-flow line between tandem pump and fuel fil‐
ter with hose clamp - MP 7-602 - .
– Start engine and increase engine speed to 4000 rpm.
– Observe displayed pressure on the tester for tandem pump .
• Specified value: min. 1.05 MPa (10.5 bar).
If the specified value is reached:
Pressure loss at the unit injectors.
– Replace O-rings for unit injectors
If the measurement is less than the specification:
– Replace tandem pump
Note
After removing the tester for tandem pump , tighten the screw plug
to 25 Nm. Always replace the gasket ring.
1.15.2 Checking the feed pressure of the tan‐
dem pump, vehicles with engine code
BMM
Special tools and workshop equipment required
♦ Tester for tandem pump e.g. -VAS 5187- with hollow screw -
VAS 5187/1A-
♦ Hose clamp - MP 7-602 (3094)-
♦ Pliers for spring-type clips
Test conditions
• The coolant temperature must be at least 85 °C.
• Unit injectors O.K.
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• Fuel filter and fuel line must not be blocked.
unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�
Work procedure
Note
Safety precautions when working on the fuel supply system
♦
⇒ page 3 .
Observe the regulations concerning cleanliness when working
♦
on the fuel supply/injection system
– Remove engine cover
176
Rep. gr.20 - Fuel supply system
⇒ page 215
⇒ page 171 .
⇒ page 4 .
⇒ page 13 .
.