Replacing ignition coils (B46/B48 4-Cyl. Engine) (4' Series Coupe/Convertible, 4' Series Gran Coupe Sedan)
IMPORTANT:
Ignition coils must not be contaminated by fuel.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
The silicone tube of the spark plug connector is coated with talc to reduce the pulling forces. The silicone tube must NOT be oiled or greased. This would greatly reduce the durability of the silicone material, which can lead to a failure of the ignition coil.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
The silicone tube of the spark plug connector is coated with talc to reduce the pulling forces. The silicone tube must NOT be oiled or greased. This would greatly reduce the durability of the silicone material, which can lead to a failure of the ignition coil.
Necessary preliminary tasks:
- Remove ACOUSTIC COVER at rear.
Removal:
Unlock and disconnect plugs (1).
Release screw (2).
Thread out and remove ignition coil (3).
Installation:
Thread out and install ignition coil (3).
Tighten screw (2).
Observe TIGHTENING TORQUE .
Attach and lock connector (1).
Connector (1) must engage audibly.
Required follow-up work:
- Install the ACOUSTIC COVER , rear.