Check Fuel Pump - (Yeti) - Skoda Octavia III 2013 Workshop Manual

– Connect remote control - V.A.G 1348/3A- with adapter line -
V.A.G 1348/3-3- and with the line from the measuring tool set
- V.A.G 1594/C- to contact -1-.
– Mask second plug contact of the adapter - V.A.G 1348/3-3-
with short-circuit proof tape -arrow-.
– Connect contact -5- with line of auxiliary measuring set - V.A.G
1594/C- to body mass -A-.
– Connect alligator clips to the positive terminal "+" -B- of the
battery.
Note
Primary pressure must be built up against which the fuel pump
must work when the fuel delivery flow in the fuel line is being
measured. This primary pressure is set as follows using pressure
gauge VAS 6550:
– Activate remote control - V.A.G 1348/3A- . While doing this,
slowly close the shut-off tap -B- until the pressure gauge dis‐
plays a pressure of 0.4 MPa (4 bar). Now do not make any
further changes to the position of the shut-off cock.
– Empty measuring glass.
– Activate remote control for 15 seconds.
– Compare fuel quantity delivered with minimum flow quantity in
3
the diagram cm /15s.
Note
Voltage at the fuel pump when engine is not running and pump is
approximately 2 volts less than battery voltage.
If the minimum fuel delivery volume is not reached, it can be
caused by the following faults:
♦ Fuel lines squashed.
♦ The fuel filter is clogged.
♦ The fuel pressure sender is defective.
♦ Fuel delivery unit defective.
Installation is carried out in the reverse order.
1.12

Check fuel pump - (Yeti)

⇒ "1.12.1 Checking fuel pressure", page 208
⇒ "1.12.2 Testing holding pressure", page 210
⇒ "1.12.3 Checking fuel delivery rate", page 212
Special tools and workshop equipment required
♦ Pressure gauge , e.g. -VAS 6550-
Octavia III 2013 ➤ , Octavia III 2014 ➤ , Yeti 2010 ➤ , Yeti 2011 ➤
1.6/81 kW MPI engine - Edition 06.2014
1. Fuel tank and fuel delivery unit
207