Skoda Octavia III 2013 Workshop Manual page 212

Octavia III 2013 ➤ , Octavia III 2014 ➤
1.2/63; 77 kW TSI engine - Edition 11.2014
– Insert hose line - VAS 6550/1- and keep in the fuel-resistant
measuring vessel.
Caution
Risk of fuel dripping out.
♦ Make sure that the shut-off tap -C- is closed.
♦ Lever points in the direction of flow.
– Open shut-off taps -A- and -B- .
– Switch on ignition until bubble-free fuel flows out.
– Close shut-off tap -B- to will build fuel pressure.
– Read off fuel pressure on pressure gauge.
• Specified value: 0.4...0.70 MPa (4...7.0 bar)
If the specification is not attained:
– Perform fuel delivery quantity check
⇒ "1.7.3 Checking fuel delivery rate", page 207
1.7.2 Testing holding pressure
Special tools and workshop equipment required
♦ Pressure gauge , e.g. -VAS 6550-
♦ Measuring vessel
Note
Safety precautions when working on the fuel supply system
♦
⇒ "2.1 Safety precautions when working on fuel supply sys‐
tem", page 2 .
Rules of cleanliness when working on the fuel supply system
♦
⇒ "3.1 Rules of cleanliness", page 7
Test conditions when working on the fuel supply system
♦
⇒ "2.3 Safety precautions during road tests in which testing
and measuring equipment is used", page 4
– Check leak tightness and while doing so observe pressure
drop at pressure gauge - VAS 6550- .
• The pressure must not drop below 0.3 MPa (3.0 bar) after 10
minutes.
If the pressure again falls below 0.3 MPa (3.0 bar)
• Check line connections between pressure gauge - VAS 6550-
and fuel feed line for leak tightness.
• Inspect pressure measuring device - VAS 6550- for leaks.
• Check fuel lines and its connections for tightness.
If no fault is found:
♦ Non-return valve in the fuel delivery unit is leaking:
206
Rep. gr.20 - Fuel supply system
.
.
.