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Volkswagen Workshop Service and Repair Manuals

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Repairing valve gear > < Installing

Golf Mk5

Checking compression
   
Checking compression
Special tools and workshop equipment required
t  Jointed spanner -3220-
t  Torque wrench -V.A.G 1331-
t  Adapter -V.A.G 1381/12-
t  Compression tester -V.A.G 1763-

Test prerequisite
l  Engine oil temperature min. 30 °C.
Test procedure
–  Pull off central connector for unit injectors.
–  Remove all glow plugs using jointed extension and socket -3220-.
   
–  Screw in adapter -V.A.G 1381/12- in place of glow plugs.
–  Check compression using compression tester -V.A.G 1763-.
  Note
Using compression tester ⇒ Operating instructions.
–  Operate starter until tester shows no further pressure increase.
Compression pressures:
New: 25...31 bar, wear limit: 19 bar
Maximum permissible difference between all cylinders: 5 bar
–  Install glow plugs using jointed extension and socket -3220-.
Torque setting: 15 Nm.
–  Read fault memory of engine control unit → Chapter.
  Note
Disconnecting the central connector for unit injectors causes faults to be stored. Therefore read and erase fault memory.
  N15-0227

Repairing valve gear > < Installing