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Checking injectors (piezo injectors) > < Removing and installing intake manifold

Leon Mk2

Removing and installing rail element (high-pressure accumulator)
Removing and installing rail element (high-pressure accumulator)
t  Removing → Anchor.
t  Installing → Anchor.
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
   
Special tools and workshop equipment required
t  Socket wrench insert -T40055-, see equivalent → Anchor
t  Torque wrench (5 - 50 Nm) -V.A.G 1331-, see equivalent → Anchor
t  Ratchet -V.A.G 1331/1-, see equivalent → Anchor
t  Insert e/c 17 terminal -V.A.G 1331/6-, see equivalent → Anchor

Removing .
  WARNING
t  Always read rules for cleanliness and instructions for working on fuel system → Chapter.
t  Always follow these rules for cleanliness and instructions before starting work and while working on the fuel system.
   
–  Remove the engine cover upwards -arrows-.
–  Take noise insulation off cylinder head cover.
  E10-10085
–  Unscrew union nuts at high-pressure pump -6- and rail element -1- and remove high-pressure fuel pipe.
–  Remove bolts -arrows- for high-pressure fuel pipe.
–  Pull off fuel return hose -3-.
–  Move wiring harness -2- clear.
  A23-10292
–  For this purpose, unplug the following electric connectors.
1 - Fuel pressure sender -G247-
2 - Fuel pressure regulating valve -N276-
 - Injectors
 - Glow plugs
  Caution
t  Mark allocation of high-pressure pipe to cylinder. They must always be re-installed on the same cylinders.
t  Observe rules for cleanliness when working on the injection system.
t  Plug open connections with suitable sealing caps immediately.
–  Unscrew the union nuts for high-pressure pipes on injectors using socket -T40055-, SW17 mm.
–  Loosen union nuts for high-pressure pipes at rail element using tool insert, AF 17 -V.A.G 1331/6-.
–  After removal, lay high-pressure lines on a clean cloth.
–  Unscrew the two bolts and remove rail element.
Installing .
Carry out the assembly operations in reverse order to those described for the disassembly, taking the following into account:
–  Install high-pressure pipes free of stress.
  Note
t  Observe cylinder specific markings when reusing high-pressure lines.
t  The high-pressure lines can principally be reuse according to the following test:
t  Check taper seat of respective high-pressure line for deformation and cracks.
t  The line hole must not be deformed, constricted or damaged.
t  Corroded lines should no longer be used.
t  Specified torques → Chapter.
  A23-10291

Checking injectors (piezo injectors) > < Removing and installing intake manifold