13 53 310 Removing and installing/replacing an injector (N63): Notes
WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
WARNING:
Observe warning on cylinder head cover.
Clamp off negative battery terminal (risk of fire due to short-circuiting on dismantling).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature below 40 °C.
Clamp off negative battery terminal (risk of fire due to short-circuiting on dismantling).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature below 40 °C.
WARNING:
Wear full face guard and protective gloves.
Fuel can emerge spontaneously at high velocity from the fuel injectors!
To reduce the fuel pressure, place rag over fuel injector and carefully tap against the fuel injector with a spanner.
There is a risk of injury if the fuel pressure is not reduced!
Fuel can emerge spontaneously at high velocity from the fuel injectors!
To reduce the fuel pressure, place rag over fuel injector and carefully tap against the fuel injector with a spanner.
There is a risk of injury if the fuel pressure is not reduced!
IMPORTANT:
Wear safety goggles.
Oil and dirt particles may get into your eyes!
Oil and dirt particles may get into your eyes!
Before removing the injectors, clean or vacuum off injector slots.
IMPORTANT:
Observe without fail the tightening sequences and tightening torques when reassembling.
Disregard of these requirements may result in leaks!
Disregard of these requirements may result in leaks!
IMPORTANT:
Adhere to conditions of absolute cleanliness when working on the high-pressure fuel system.
Introduced contaminants can cause malfunctions in the system!
Introduced contaminants can cause malfunctions in the system!
- Do not allow any dirt particles or foreign bodies to get into the system.
- Remove all traces of dirt before removing lines or separate components.
- Use only fluff-free cloths.
- Seal all fuel system openings with protective caps or plugs.
- High pressure lines may be rescrewed a maximum of 10 times.
IMPORTANT:
Injectors are not waterproof!
Carry out engine cleaning/washing only with ignition coil cover fitted.
Carry out engine cleaning/washing only with ignition coil cover fitted.
Necessary preliminary tasks:
- Remove IGNITION COIL of corresponding cylinder
NOTE:
- Ignition coils must not be fouled by fuel!
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail! It is therefore essential to protect the spark plug slot against ingress of fuel with a cloth!
- Before installing ignition coils, clean spark plug slots with compressed air.
- Make sure the spark plug slot is absolutely clean.
- Remove PRESSURE LINES on corresponding injectors
NOTE:
The following description applies to all injectors.
Release bolt (1) and remove holding-down element (2).
Remove injector (1).
NOTE:
If several injectors are removed, ensure that each injector is reinstalled in its original location (cylinder).
Mark injectors.
Mark injectors.