Carry Out The Vacuum Test Of The Injection Units - Skoda Octavia III 2013 Workshop Manual

Octavia III 2013 ➤ , Octavia III 2014 ➤
1.6/66; 77; 81; 2.0/105; 110; 135 kW TDI CR engine - Edition 07.2014
– Disconnect electrical plug connection -2- at the fuel pressure
control valve - N276- Pos. -1-.
Note
This prevents fuel from being injected during the start attempt.
– Firmly fit adapter C6 to the return-flow line connections of all
4 injection units.
– Connect hose lines of the return flow quantity measuring de‐
vice - VAS 6684- to the adapter.
– Actuate the starter 3 times (leave a pause of 20 seconds be‐
tween each start attempt - starter overheating protection).
• Specified value of the return flow quantity: 0 ml
– If fuel is leaking from one fuel injection unit, that injection unit
must be replaced.
– Put the electrical plug connection from the fuel pressure con‐
trol valve - N276- back in place.
Assembly of fuel return-flow lines
– Press connections of return-flow lines onto the injection units
until they audibly locks into place.
– Then press the brackets down on both sides.
– Check fuel system for tightness
⇒ "1.4 Check the fuel system for tightness", page 322
– Interrogating and erasing fault memory of engine control unit
⇒ Vehicle diagnostic tester.
2.7 Carry out the vacuum test of the injec‐
tion units
Special tools and workshop equipment required
♦ Hand vacuum pump , e.g. -VAS 6213-
♦ Adapter C6 from return quantity measuring device - VAS
6684-
Work procedure
Note
Safety precautions when working on the fuel supply system
♦
⇒ "2 Safety instructions", page 3
Observe rules for cleanliness
♦
⇒ "3.1 Rules of cleanliness", page 6
– Delete event memory entry with vehicle diagnosis tester ⇒ Ve‐
hicle diagnostic tester.
– Remove engine cover
⇒ "1.1 Removing and installing engine trim panel", page 10
– Before removing, clean all connections (for example with a
commercially available cold cleaner).
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Rep. gr.23 - Mixture preparation - injection
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