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Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Engine Electrical System -- Repair (G02)) >> 12 13 Ignition Coils >> 12 13 512 Replacing more than one ignition coil (after vehicle diagnosis) (X4 M40i 2019-2021) >> Installing the ignition coils

Installing the ignition coils

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NOTE: RISK OF DAMAGE 
Damage to the catalytic converter due to misfiring. 
An incorrectly mounted ignition coil can loosen during engine operation, thereby causing misfiring. 
  • Ensure that the sealing lip on the ignition coil is correctly seated so that it seals properly. Do not crush the sealing lip.
NOTE: The description is provided only at one component. The procedure is the same for all other components.
TIGHTENING TORQUE SPECIFICATIONS

Ignition coil 
M6x31.8 Tightening torque  8 Nm
G10102144Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work