BMW X5: Ignition Wires, Spark
REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
Necessary preliminary tasks:
- Switch off ignition
- Remove ignition coils.
Unscrew spark plugs with special tool 12 1 171.
Installation:
Tighten down spark plugs with special tool 12 1 171and special tool 12 1 200
(torque limiter).
Without special tool 12 1 200, observe tightening torque. See 12 1 200 TORQUE
LIMITER 30 NM.
Tightening torque 12 12 1AZ0.
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Fig. 1: Identifying Special Tool (12 1 171) And (12 1 172)
READ NEXT:
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting -> Fault in fuel injection system
-> Spark plug faults
-> Ignition coil faults
-> Further fault patterns with evaluation
-> Additional
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection).
IMPORTANT: Aluminum-magnesium materials.
No steel screws/bolts may be used due to the threat of ele
SEE MORE:
CAUTION: To avoid damage when handling optical fibers, comply with the
following
points:
The minimum permitted bending radius is 25 mm
Do not subject optical fibers to compressive and tensile load
Protect optical fibers against the effects of heat > or =85ºC
(e.g.
during welding work, dr
WARNING: Danger to life!
Mount securing fixture for vehicle on lifting platform to prevent the
vehicle from slipping off or tilting down.
Secure engine in installation position to prevent it from falling down.
Necessary preliminary tasks:
Lower front axle support.
Remove both lower control arms