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Solve both wiring harness attachments (A) at the valve cove.
Take off plug (B) vond ignition coils (C).
Unscrew the ignition coils.
Blow out the spark plug slots with compressed air.
Unscrew spark plugs (D) with box spanner (SW 16).
Box spanner (SW 16)
Check the candle face.
Conclusions on the operation status of the engine can be made from
the burn-up. Apply the following regulations:
Electrodes and moldings. Centralgrey (1) = correct the spark plug
light-grey (2) = mixture too lean
oil (3) = expose to the spark plug concerned or badly sealing
piston rings operate
black (4) = mixture too rich.
A
B
D
1 2
3 4
C
ill. 1
ill. 2
ill. 3
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