LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2021 >> X3 sDrive30i >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System -- Repair (1 Of 2) (G01) >> 13 53 Injector Nozzles And Lines >> 13 53 156 Remove and install high-pressure rail (X3 4-cyl. models except PHEV, 2018-2019) >> Remove high-pressure rail

Remove high-pressure rail

WARNING: Working on 12 V electrical system. 
Risk of short circuits! Risk of fire! 
  • Make sure that there is no charger  connected to the jump start terminal in the engine compartment.
  • Detach battery ground lead from battery.
  • For auxiliary batteries:  Detach battery minus cables from all auxiliary batteries.
NOTE: RISK OF DAMAGE 
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS). 
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults. 
  • Detach battery terminal from battery pole. Do not pry off using a tool.

Preliminary work 

NOTE: RISK OF DAMAGE 
Damage to injectors. 
Excessive force may damage the injector and this means having to replace the injector. 
  • Twist the injectors with a torsional movement of maximum 13 Nm.
NOTE: RISK OF DAMAGE 
Damage to the injector tips and Teflon ring. 
Improper handling of the injector tips and Teflon ring can lead to malfunctioning of the injector. 
  • Avoid mechanical contact with injector tip.
  • When exchanging Teflon ring, hands and work surface must be clean and free of oil. Do not use any lubricating agents.
  • Do not use fingernails to slide Teflon ring on.
NOTE: RISK OF DAMAGE 
Contaminant or foreign body. 
Contamination can result in malfunctions, loss of function or leaks. 
  • Adhere to the utmost cleanliness.
  • Protect components from contamination e.g. by covering.
  • Close off line connections with seal plugs.
G11645677Courtesy of BMW OF NORTH AMERICA, INC.