REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
12 1 171
12 1 200.
Necessary preliminary tasks:
Switch off ignition
Remove ignition coils.
Unscrew spark
SEE MORE:
GENERAL FUNCTION DESCRIPTION FOR FUEL SUPPLY SYSTEMS
Fuel supply systems, spark-ignition engines
Fuel system
The electric fuel pump in the fuel tank generates the pressure in the fuel
system which is set by the pressure
regulator to a specific level.
Tank venting system
The tank venting system is a
IMPORTANT: Only repair those cables which show visible signs of damage.
In the event of
visible damage, make sure there is only one cable repair in effect after the
repair work. If no visible damage can be identified, the entire cable must be
replaced. When carrying out repairs to the airbag wiring