Testing Compression - Skoda Octavia Workshop Manual

OCTAVIA
Edition 08.99
S00.5127.50.20
Cylinder Head/Valve Gear

Testing compression

Special tools, testers and aids required
♦ Spark plug wrench (e.g. 3122 B)
♦ Assembly tool T10029
♦ Torque wrench 5...50 Nm
(e.g. V.A.G 1331)
♦ Compression tester
(e.g. V.A.G 1763)
Test condition
l Engine oil temperature must be at least
30 °C.
Test procedure
K - Unplug the 4-pin plug connector -1- from the
power output stage of ignition coil -2-.
- Remove fuse 32.
Note:
Removing fuse 32 interrupts the voltage supply
of the injectors.
- Use assembly tool T10029 to unplug the
spark plug connectors and use spark plug
wrench (e.g. 3122 B) to remove the spark
plugs.
- Test compression pressure with compres-
sion tester (e.g. V.A.G 1763).
Note:
Use of tester ⇒ Operating instructions.
- Have a second mechanic operate the starter
with the throttle valve fully open until no fur-
ther pressure rise is indicated by the tester.
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