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Valve control: Repairing > < Cylinder head: removal and refitting

Leon Mk1

Compression: checking
   
Compression: checking
Special tools and workshop equipment required
t  Spanner -U-40082-
t  Torque wrench -SAT 8010-
t  Adapter -V.A.G 1381/12-
t  Compressograph -V.A.G 1763-

Checking conditions
l  Engine oil temperature, at least 30 °C.
Checking process
–  Remove the top of the intake manifold.
–  Disconnect the 10 contact connector for the fuel cut valve -N109- (connector to the injection pump dosing servomechanism) → Rep. Gr.23.
–  Extract the connectors from the glow plugs.
–  Remove all the glow plugs with the tool -U-40082-.
   
–  Screw the -V.A.G 1381/12- adapter in the place of the glow plugs.
–  Check the compression using the -V.A.G 1763- compressograph.
  Note!
Use of the checking apparatus ⇒ Instructions for use.
–  Run the starter motor until the checking apparatus no longer indicates an increase in pressure.
Compression values
New: 25 … 31 bar
   Wear limit: 19 bar
Admissible difference between the cylinders: 5 bar
–  Fit the glow plugs with the tool -U-40082-.
   Torque: 15 Nm
–  Consult the fault memory → Rep. Gr.01
  Note!
On separating the connectors to the injection pump, faults are memorised. Therefore, it is necessary to consult the fault memory and delete if needed.
  N15-0013

Valve control: Repairing > < Cylinder head: removal and refitting