BMW 7 Series: Ignition Wires, Spark Plugs
REPLACING ALL SPARK PLUGS (N54, N63, N74)
Necessary preliminary tasks
- Switch off ignition.
- Remove IGNITION COILS.
IMPORTANT: Wear safety goggles.
Oil and dirt particles may get into your eyes!
Clean spark plug slot with compressed air.
Unscrew spark plugs with special tool 12 1 220 and extension with min. 8º bend.
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Fig. 14: Unscrewing Spark Plugs With Special Tool (12 1 220)
Attach new spark plug (1) to special tool 12 1 230.
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Fig. 15: Attaching Spark Plug To Special Tool (12 1 230)
Screw spark plug with special tool 12 1 230 hand-tight into cylinder head plug thread as far as it will go.
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Fig. 16: Screwing Spark Plug With Special Tool (12 1 230)
Installation note: Tighten spark plugs with torque wrench, special tool 12 1 220 and extension with min. 8º bend.
Observe tightening torque.
Tightening torque 12 12 2AZ.
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Fig. 17: Tightening Spark Plugs With Torque Wrench, Special Tool (12 1 220)
READ NEXT:
Ignition Coil
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting
Fault in fuel injection system
Spark plug faults
Ignition coil faults
Further fault patterns with evaluation
Additional fault notes for troubles
Coding Control Module (DME/DDE)
Switch off ignition.
Connect MoDiC or DIS/GT1 Tester.
Switch on ignition.
Select "Coding" program.
For subsequent procedure, follow instructions in MoDiC or DIS/GT1 Tester.
Carry out adjustment of
SEE MORE:
Intelligent Safety
Concept
Intelligent Safety enables central operation of the
driver assistance systems.
General information
Depending on how the vehicle is equipped, Intelligent
Safety consists of one or more systems
that can help prevent an imminent collision.
Front collision mitigation.
Evasion Assistant.
Inte
Removing And Installing/Renewing Both Solenoid Valves On Right
Side (N63)
IMPORTANT: Always check that the solenoid valves are clean during removal
and
installation.
Possible malfunctions if valves are contaminated:
Irregular operation
OBD incorrect entry
Poor exhaust gas values
Low engine performance
IMPORTANT: Risk of damage!
Do not clean solenoid valves with co
