Skoda Octavia II 2004 Workshop Manual page 183

– Remove air filter ⇒ page 220
– Release screw plug -arrow-.
– 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 run in idle.
– Observe displayed pressure on the tester for tandem pump .
• Specified value: at least 0,35 MPa (3,5 bar).
– Increase engine speed to 4000 rpm.
– Observe displayed pressure on the tester for tandem pump .
• Specified value: at least 0,75 MPa (7,5 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 - .
– Observe displayed pressure on the tester for tandem pump .
• Specified value: at least 0,75 MPa (7,5 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.
.
⇒ page 225 .
⇒ page 172 .
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with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�
Octavia II 2004 ➤ , Octavia II 2010 ➤
2.0/100; 103 kW TDI PD Engine - Edition 01.2018
1. Removing and installing parts of the fuel supply system
177