Spark plugs with 3 electrodes

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Spark Plug With 3 Electrodes

Courtesy of VOLVO CARS OF NORTH AMERICA.

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.) .

Fig 2: Identifying Camshaft Components

Courtesy of VOLVO CARS OF NORTH AMERICA.

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.