Skoda Octavia III 2013 Workshop Manual page 336

Octavia III 2013 ➤ , Octavia III 2014 ➤
1.6/66; 77; 81; 2.0/105; 110; 135 kW TDI CR engine - Edition 07.2014
– Pinch of coolant hose -arrow- using a hose clamp of up to 25
mm - MP7-602 (3094)- .
– Remove noise insulation.
– Pull off return-flow line connections on injection unit by pulling
release buttons upwards -arrows-.
Note
Pay attention to cleanliness; no dirt must get into the removed
return lines and the connections of the injection units.
– 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.
– Start engine and run in idle for a few minutes.
Caution
Risk of damage to injection units when return-flow lines are
removed.
♦ No acceleration must occur during testing - the engine
must run in idle.
– When the engine is at operating temperature while the engine
is idling there must be only minimal difference in the return flow
quantity of all 4 return-flow lines (example -1-).
– If one injection unit has a significantly higher return flow quan‐
tity (example -2-), this injection unit must be replaced
⇒ "2.8 Removing and installing the injection units",
page 331 .
Assembly of fuel return-flow lines
– Carefully press the connections of the return-flow lines onto
the injection units. The cap must click audibly into place, af‐
terwards carefully press the unlocking bolt downwards.
– Check fuel system for tightness
⇒ "1.4 Check the fuel system for tightness", page 322
328
Rep. gr.23 - Mixture preparation - injection
.