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SEAT Workshop Service and Repair Manuals

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Servicing valve gear > < Removing and installing cylinder head

Leon Mk1

Checking compression
Checking compression
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
   
Special tools and workshop equipment required
t  Spanner -U 40082-, see equivalent → Anchor
t  Torque wrench kit -SAT 8010-, see equivalent → Anchor
t  Adapter -VAG 1381/12-, see equivalent → Anchor
t  Compression tester -VAG 1763-, see equivalent → Anchor

Test prerequisites
l  Engine oil temperature at least. 30℃
l  Battery voltage: min. 12.5 V
Checking sequence
–  Disconnect the central connection for the pump injectors.
–  Unscrew the glow plugs using spark plug spanner -U-40082-.
   
–  Screw in the adaptor -VAG 1381/12- in the place of the glow plugs.
–  Check compression with the compression tester -VAG 1763-.
  Note
Use of the testing equipment → Instructions.
–  Operate starter until pressure reading on tester no longer rises.
Compression pressure
  N15-0227
New
bar positive pressure		Wear limit
bar positive pressure		 Difference between cylinders
bar positive pressure
25,0 … 31,019,05.0 (maximum)

–  Fit the glow plugs using spark plug spanner -U-40082- to the torque of 15.
–  interrogate fault memory → Vehicle diagnostic, testing and information system VAS 5051.
  Note
When the central connection for the pump injectors is removed, this is recorded by the fault memory. For this, check the fault memory and, if necessary, clear it.
   

Servicing valve gear > < Removing and installing cylinder head