volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Toothed belt drive > < Removing and installing vacuum pump

Golf Mk6

Checking compression
Checking compression
Special tools and workshop equipment required
   
t  Jointed wrench 10 mm -3220-
  W00-0329
t  Compression tester -V.A.G 1763- with adapter -V.A.G 1763/8-
Test prerequisite
l  Engine oil temperature min. 80 °C.
l  Battery voltage at least 12.5 V
Test procedure
–  Remove engine cover panel → Chapter.
  W00-0563
–  Disconnect electrical connector from fuel pressure regulating valve -N 276--arrow- on high-pressure accumulator.
–  Start engine briefly to reduce fuel pressure in high-pressure accumulator.
  A23-10578
–  Remove all glow pin plugs using jointed spanner -3220- → Chapter.
–  Screw in adapter -V.A.G 1763/8- in each place where glow plugs were and connect compression tester -V.A.G 1763-.
  Note
Using compression tester → operating instructions.
–  Have starter operated by a 2nd mechanic until tester shows no further pressure increase.
  A15-11046
Compression pressuresbar
New25.0 … 31.0
Wear limit19.0
Maximum difference between cylinders5.0

Installation is carried out in the reverse order; note the following:
–  Install glow plugs → Chapter.
–  Entries are stored in the event memory of the engine control unit because electrical connectors were disconnected and the engine was started: Read event memory in vehicle self-diagnosis → .
   

Toothed belt drive > < Removing and installing vacuum pump