Replacing Spark Plugs

Replacing spark plugs

Note! As the illustrations in the information are used for different model years and / or models, certain variations may occur. However, the essential information in the illustrations is always correct.

Removing sparkplugs:





Remove:
- any charge air pipe over the engine.
Seal the openings.
- the upper camshaft belt cover.
- the cover over the ignition coils.

Remove the spark plugs




Mark up the ignition coils.

Remove:
- the ignition coils.
Mark up their locations.
Put the ignition coils to one side without disconnecting the connectors.
- the spark plugs.

Replace the spark plugs




Install new spark plugs:
- Check the spark plug gap.

Note! Turbocharged engines: Correct spark gap: 0.7 - 0.8 mm (0.02- 0.03 in).

- Lubricate the spark plug threads with paste.
P/N: 116 1408.
Tighten to 30 Nm (22 lb.ft) .

Spark plugs with 3 electrodes





Normally aspirated engine:
Note! Spark plugs with 3 electrodes. Cannot be adjusted. The gaps listed and that can be measured are between the insulator and side electrode. Nominal measurement: 0.5 mm (0.02 in).

Lubricate the spark plug threads with paste.
P/N: 116 1408.
Tighten to 30 Nm (22 lb.ft) .





Install:
- the ignition coils.
Check the marking.
Tighten to 10 Nm (7.4 lb.ft) .
- the cover over the ignition coils.
Tighten to 8 Nm (6 lb.ft) .
- the upper camshaft belt cover.
Tighten to 8 Nm (6 lb.ft) .
- any charge air pipe over the engine.
Remove the seals from the openings.

Checking work

Function test:
- start the engine and check that it functions normally.
Wipe the steering wheel and gear selector lever clean.