buttons SKODA OCTAVIA 1997 1.G / (1U) 1.8 92kw Engine Workshop Manual

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Edition 08.96




Removing and installing fuel delivery unit
Pay attention to safety precautions ⇒
page 20-4.
Pay attention to rules for cleanliness ⇒ page
20-4. Special tools, testers and aids required♦ Wrench for union nut MP 1-227
Removing
- If car is fitted with a coded radio set, deter- mine coding, if necessary.
- Switch off ignition (if not already off) and dis- connect earth strap at the battery.
- Unbolt cover (below the rear seat).
- Disconnect feed and return flow pipes from the flange of the fuel delivery unit (press release buttons).
- Release 4-pin connector from the flange at the fuel tank and unplug.
- Use wrench MP 1-227 to unscrew union nut.
- Pull fuel delivery unit and seal out of the
opening of the fuel tank.
Note:
If the delivery unit is still filled with fuel, emptybefore replacing.
Installing Installation is performed in the reverse order; pay attention to the following points:
Notes:
♦When inserting the fuel delivery unit, ensure
that the fuel gauge sender is not bent.
♦Moisten seal of the flange with fuel beforeinstalling.
♦Ensure the fuel hoses are tightly connected.

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Edition 08.96




Removing
- If car is fitted with a coded radio set, pay attention to coding; determine if necessary.
- Switch off ignition (if not already off), and disconnect earth strap at the battery.
- Empty fuel tank with fuel extraction unit (e.g. V.A.G 1433 A).
- Remove rear suspension: ⇒ Running Gear; Repair Group 42; Servicing rear suspension; Removing and installing rear suspension.
- Unbolt cover (below the rear seat).
- Release 4-pin connector from the flange at fuel tank and unplug.
- Open fuel filler flap and lever out tensioning ring in rubber bowl (around filler neck).
- Push rubber bowl through to the inside.
- Remove rear right wheelhouse liner.
- Unscrew fuel filler neck below the wheel- house liner.
- Remove cover below the fuel tank -arrows-
(if fitted).
- Disconnect return flow pipe -2- (blue), feed
pipe -1- (black) and breather pipe -3- (white) at the front right of the fuel tank (press release buttons).
- Place engine/gearbox jack (e.g. V.A.G 1383 A) below the fuel tank to support it.

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Edition 08.96



 
Test procedure
- Switch off ignition.
- Connect remote control V.A.G 1348/3A with
adapter cable V.A.G 1348/3-2 ⇒ page 20-8.
- Remove cap from the fuel filler neck.
Important! Fuel system is pressurised! Place cleaning ragsaround the connection point before opening the
system. Then, release pressure by carefullyloosening the connection point.
- Disconnect fuel return flow pipe -2- (press
release buttons).
- Connect auxiliary hose to adapter V.A.G 1318/17 and fit onto the fuel return flow pipe of the engine and hold in a measuring vessel.
- Operate remote control for 15 seconds (press button and hold).
- Compare quantity of fuel supplied with spe-
cification.
*)Minimum delivery cm3/15 s
**)Voltage at fuel pump when engine switched
off and pump running (about 2 V less than battery voltage).

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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