Check Injection Unit Return Flow Quantity At Starter Speed - Skoda Octavia III 2013 Workshop Manual

2.6 Check injection unit return flow quantity
at starter speed
Note
If the engine will not start the return flow quantity of the injection
units can also be tested at starter speed.
Special tools and workshop equipment required
♦ Return flow 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
Note
Each injection unit has a small fuel return-flow quantity. If this re‐
turn flow quantity is relatively great (in relation to the return flow
quantity of the other injection units), this injection unit is probably
defective.
– Remove engine cover
⇒ "1.1 Removing and installing engine trim panel", page 10
– Before removing, clean all return flow connections (for exam‐
ple with a commercially available cold cleaner).
– Dry all cleaned parts.
– Remove noise insulation.
– Pull return-flow line connections of the injection units - to do
so, pull the bracket upwards -arrows-.
Note
Pay attention to cleanliness; no dirt must get into the removed
return lines and the connections of the injection units.
1.6/66; 77; 81; 2.0/105; 110; 135 kW TDI CR engine - Edition 07.2014
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Octavia III 2013 ➤ , Octavia III 2014 ➤
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2. Injection units/fuel distributor
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