BMW 7 Series (F01/F02) 2008-2015 Service Manual / Fuel Supply System / Fuel Pump With Drive And Line
BMW 7 Series: Fuel Pump With Drive And Line
- Check Fuel Pressure
- Checking Fuel Delivery Pressure (N20, N53, N54, N55, N63, N74)
- Notes Regarding The Fuel Pressure Test (Reference Pressure: Surrounding Area)
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Check Fuel Pressure
Necessary preliminary work:
Connect BMW diagnosis system.
IMPORTANT: Lines are under pressure!
Wear protective goggles and gloves.
Fuel can emerge spontaneously at high velocity when the fuel line is
Checking Fuel Delivery Pressure (N20, N53, N54, N55, N63, N74)
Necessary preliminary work:
Connect BMW diagnosis system.
IMPORTANT: Lines are under pressure!
Wear protective goggles and gloves.
Fuel can emerge spontaneously at high velocity when the fuel line is
Notes Regarding The Fuel Pressure Test (Reference Pressure:
Surrounding Area)
The characteristic of this version with ambient pressure:
The connection for the vacuum hose of the fuel pressure regulator is located
between the throttle and the air
cleaner or on the air cleaner.
SEE MORE:
Checking Fuel Tank And Tank Ventilation System For Leaks
Notes
NOTE: The following procedure is only applicable to vehicles without the
tank leak
diagnosis module.
Necessary preliminary work
Remove rear right wheel arch trim.
Comply with the following conditions in order to obtain plausible test
results:
Content of fuel tank:
Maximum 90 %
Minim
Removing And Installing/Replacing Both Solenoid Valves On Left Side
(N63)
IMPORTANT: Always check that the solenoid valves are clean during removal
and
installation.
Possible malfunctions if valves are contaminated:
Irregular operation
OBD incorrect entry
Poor exhaust gas values
Low engine performance
IMPORTANT: Risk of damage!
Do not clean solenoid valves with co
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