N52 / N53 Family

BMW N53B30
BMW N53B30 – photo by ///Marco.it

BMW N52 / N53 Family

All Engines

Problems

  • Valve cover gasket
  • Water pump
  • Coil packs
  • Fuel injectors

N52

Problems

All Vehicles

  • Oil filter housing gasket (OFHG)
  • TSB – Deposits in the injection and induction system:
    • Deposits at the fuel injector’s tip – symptoms include hesitation or stumble during acceleration, loss of power, poor fuel efficiency, increased emissions, and/or CEL due to misfires
    • Carbon deposits at the valves or intake manifold ports – symptoms include loss of power, unstable and/or rough idle, increased emissions, and/or CEL due to misfires
    • Combustion Chamber Deposit Interference (CCDI) – pinging or knocking which may be mistaken for engine knock that first occurs as a cold start noise that fades as the engine reaches temperature; symptoms may also include increased emissions, poor acceleration, and engine idle speed surges

Certain Vehicles

  • MY06: VANOS solenoids (fault codes 2A87 and 2A88)
  • MY08 and earlier: TSB – Occasional ticking/rattling may occur on cold starts. This requires replacement of the 12 camshaft hydraulic valve lifters.

Usage

N53

Problems

  • High pressure fuel pump (HPFP) – the car may take a long time to start
  • Carbon deposits on the inlet valves

Usage

This engine was not sold on any vehicles in the United States.