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Disassembling and assembling fuel distributor with injectors > < Individual components of system - Installation overview

Octavia Mk1

Repairing injection part
Repairing injection part
Repairing the ignition part → Chapter
  Note
t  Before repairs as well as trouble shooting first interrogate the fault memory. Also check the vacuum hoses and connections (unmetered air).
t  Components marked with an * are checked by the self-diagnosis. → Chapter
t  Components marked with ** are tested by the final control diagnosis → Chapter.
t  A minimum voltage of 11.5 V is required for perfect functioning of the electrical components.
t  If after fault finding, repair or inspection of components the engine starts briefly and then stops, it is possible that the immobiliser blocks the engine control unit. Then interrogate the fault memory and if necessary adapt the engine control unit → Chapter.
t  Certain inspections may cause the engine control unit to detect and store a fault. It is therefore necessary to interrogate the fault memory after having completed all inspections and repairs, and if necessary delete → Chapter.
t  Always replace clamp-type clips with screw clips.
Safety measures → Chapter
Cleanliness rules → Chapter
Technical data → Chapter
Testing the intake system for tightness (unmetered air) → Chapter.
   
1 - Hot-air intake hose
q   to hot air collector
2 - to oil separator
3 - Air filter
q   disassembling and assembling → Chapter
4 - Connector
q   4-pin
q   for intake manifold pressure sender - G71- with intake air temperature sender -G42-
5 - Connector
q   8-pin
q   Throttle valve control unit -J338-
6 - Cable guide
q   clipped onto fuel distributor
7 - 10 Nm
8 - Fuel rail with injection valves
q   disassembling and assembling → Chapter
9 - Connection for fuel return hose
10 - Connection for fuel supply hose
11 - To the brake servo unit
12 - Vacuum hose
13 - Fuel-intake hose
q   secure on fuel distributor with spring strap clamps
q   black, if necessary white marking
14 - Fuel return hose
q   secure on fuel distributor with spring strap clamps
q   blue or blue marking
15 - 20 Nm
16 - Intake manifold
q   disassembling and assembling → Chapter
17 - “O”-ring
q   replace
18 - Coolant regulator housing
19 - “O”-ring
q   replace if damaged
20 - Coolant temperature sender -G62-*
q   with coolant temperature gauge sensor - G2-
q   before removing, adjust the pressure in the cooling system if necessary
q   check → Chapter
q   resistances → Fig.
21 - 4-pin plug connection
22 - Retaining clip
23 - Lambda probe -G39-* 55 Nm
q   Fitting location: in the front exhaust pipe
q   only grease the thread with “G5”; “G5” must not come into contact with the slots of the probe body
q   Test lambda probe and lambda control → Chapter
q   Check lambda probe heater → Chapter
q   Check probe heater for continuity
24 - 4-pin plug connection
q   for lambda probe and lambda probe heater
q   attached to the vehicle floor on the right next to the lambda probe below a cap
25 - to fuel tank
26 - from the fuel delivery unit
27 - Connector
q   only insert or remove plug when the ignition is switched off
q   unlock to remove
28 - 1AV injection system control unit -J382-*
q   Fitting position: at center of plenum chamber
q   Checking voltage supply → Chapter
q   Replace control unit → Chapter

   

Disassembling and assembling fuel distributor with injectors > < Individual components of system - Installation overview