fuel filter SKODA OCTAVIA 1997 1.G / (1U) 1.8 92kw Engine Workshop Manual
Page 117 of 136
Downloaded from www.Manualslib.com manuals search engine Fuel Supply System20
Edition 11.96
Removing and installing parts of the fuel supply system
Notes:
Hose connections are secured with screw-
type, spring strap or clamp-type clips.
Always replace clamp-type clips by spring
strap clips or screw-type clips.
Fuel hoses at the engine must be securedonly with spring strap clips. It is not permitted
to use clamp-type or screw-type clips.
Always replace seals and gaskets when
carrying out removal and installation work.
Pay attention to safety precautions page 20-4.
Pay attention to rules for cleanliness page 20-4.
Removing and installing parts of the activatedcharcoal filter system page 20-12.
Servicing throttle mechanism page 20-12.
Setting throttle cable page 20-13.
Page 118 of 136
Downloaded from www.Manualslib.com manuals search engine
20Fuel Supply System
Edition 08.96
Removing and installing fuel tank with attached parts and fuel filter
1 - Overflow hose
2 - O-ring
Replace
3 - Gravity valve To remove, unclip valve and lift up and out of filler neck
Inspect valve for blockage valve vertical: open valve tilted 45°: closed. 4 - Vent pipe
To activated charcoal filter page 20-12, item 5
5 - Cap Replace seal if damaged
6 - Tensioning ring
7 - Rubber bowl
Page 125 of 136
Downloaded from www.Manualslib.com manuals search engine Fuel Supply System20
Edition 08.96
Testing fuel pump
Special tools, testers and aids required
Hand-held multimeter (e.g. V.A.G 1526)
Wrench for union nut (e.g. MP 1-227)
Adapter cable set (e.g. V.A.G 1594)
Current flow diagram
Test conditions
Holding pressure o.k.; testing:
1.8 ltr./92 kW Engine, Motronic Fuel Injection and Ignition System; Repair Group 24;
Testing fuel pressure regulator and holding pressure
Battery voltage at least 12 V
Fuse 28 o.k.
Fuse filter o.k.
Test procedure
- Switch on ignition. The fuel pump should be heard to operate. (A second mechanic may be required if there is a high level of surrounding noise) If the fuel pump does not run:
- Switch off ignition.
- Connect remote control V.A.G 1348/3A with adapter cable V.A.G 1348/3-2 page 20-8.
- Operate remote control.If the fuel pump runs:
Test fuel pump relay: 1.8 ltr./92 kW Engine, Motronic Fuel Injection and Ignition System; Repair Group 24; Servicing Motronic fuel injection system; testing fuel pump relay and actuation
Page 126 of 136
Downloaded from www.Manualslib.com manuals search engine
20Fuel Supply System
Edition 08.96
If the fuel pump does not run:
- Unbolt cover (below the rear seat).
- Release 4-pin connector form the flange at
the fuel tank and unplug.
- Connect hand-held multimeter (e.g. V.A.G
1526) with auxiliary cables (e.g. from V.A.G
1594) to the outer contacts of the connector.
- Operate remote control. Specification: about battery voltage
If the specification is not achieved:
- Determine open circuit in the wiring on the basis of the current flow diagram and rectify:
⇒ Current Flow Diagrams, Electrical Fault Finding and Fitting Locations binder
If the specification is achieved:
- Use MP 1-227 to unscrew union nut.
- Check whether the electric cables between flange and fuel pump are connected and test
for continuity.
If no open circuit in the wiring can be found:
Fuel pump faulty.
- Replace fuel delivery unit ⇒ page 20-5.
Testing delivery of the fuel pump
Special tools, testers and aids required♦ Adapter V.A.G 1318/17
♦ Measuring vessel
Test conditions
Battery voltage at least 12 V
Voltage supply o.k.
Fuel filter o.k.
Page 128 of 136
Downloaded from www.Manualslib.com manuals search engine
20Fuel Supply System
Edition 08.96
1 - Solenoid valve 1 (N80)
Testing operation and actuation:
1.8 ltr./92 kW Engine, Motronic Fuel Injection and Ignition System; Repair Group 24;
Testing tank breather; Testing solenoid valve 1 for activated charcoal filter
2 - Connector
3 - Vent pipe From gravity valve at fuel tank page
20-2, item 4
To disconnect, press release buttons on connector
4 - Throttle valve control unit
5 - Activated charcoal filter with solenoid valve 1 (N80)
Installation point: in right of engine compartment
To remove, take off PAS reservoir andpush to the side
6 - Spring nut
Removing and installing parts of the activated charcoal filter system Servicing throttle mechanism
1 - Throttle cable Adjust by re-positioning locking ele- ment on detent page 20-13
2 - Locking element
3 - Accelerator pedal
4 - Spacer bush
5 - Bearing bush
6 - Washer
7 - Stop screw
8 - 20 Nm