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 an enclosed system which is vented via a carbon canister. The carbon is incorporated in the carbon canister as granulate. The large surface of the carbon stores the fuel vapors which occur in the fuel tank. The carbon canister must be regenerated on a regular basis so as to be able to continue storing fuel vapors. Regeneration is performed by way of purging with fresh air via the intake manifold. This process is controlled by the engine control unit.
Fuel supply systems, diesel engines
Fuel system
The electric fuel pump in the fuel tank supplies the engine with fuel. Two types of high-pressure pump are used for cylinder injection.
- The distributor injection pump supplies each cylinder directly with fuel via the corresponding injection nozzle.
- The high-pressure pump for the common rail systems generates in the fuel rail the necessary pressure for all the injection nozzles.
In common rail systems, a further pump (inline pump, M57/gear pump, M67) is connected between the high-pressure pump and the electric fuel pump. This pump supports the fuel pump in the fuel tank in the event of a high fuel demand.
Tank venting system
Diesel fuel is non-volatile and therefore a carbon canister is not required. The fuel tank is vented directly to atmosphere.
16 00 005 Draining and filling fuel tank
Special tools required
- 13 5 460
- 16 1 080. See «FUEL SUPPLY SYSTEM - SPECIAL TOOLS»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-special-tools) .
| IMPORTANT | Observe country-specific safety regulations. Ensure adequate ventilation in the place of work! Connect the exhaust and extraction systems to the exhaust tailpipe. The electric fuel pump must not operate without fuel! After completing repairs but before starting the engine for the first time, fill the fuel tank with min. 5L fuel through the fuel filler pipe. Do not damage non-return flap when pulling out extraction hose. |
Diesel vehicles
Before starting the engine for the first time, if the tank has been run dry or drawn off, fill with diesel fuel and turn on ignition for approx. 1 minute. The fuel circuit is thus filled and vented, which results in the engine firing more quickly.
Drawing off fuel
Start engine and allow to run.
The electric fuel pump runs.
In this way, the fuel is repumped through the suction jet pump and the tank expansion line from the left to the right side of the fuel tank.
| IMPORTANT | Once fuel has been drawn off through the fuel filler pipe, there are still residual amounts in the fuel tank, in the fuel filter and in the fuel pump surge chamber. |
Note. Fuel can be drawn out of the left and right sides of the tank through the filler neck, leaving only a small residual amount. This residual amount in the fuel tank is drawn off after removal of the sensors for the fuel gauge (right/left).
Insert special tool 16 1 080 into filler neck.
Special tool 16 1 080 has two different diameters for petrol/gasoline and diesel vehicles!
Slide extraction hose of extractor unit through special tool 16 1 080 into the fuel filler pipe, turning in the process if necessary.
Draw off fuel as much as possible with extractor unit.
Follow drawing off of fuel on fuel gauge in instrument cluster.
Scheme 33
Draining fuel filter and surge chamber
Connect special tool 13 5 460 to connection of fuel filter (1). Connect special tool to extractor unit.
Draw off remaining fuel from filter and surge chamber.
A small amount of fuel still remains in the fuel tank.
Scheme 34
Drawing off residual fuel amount from fuel tank
| IMPORTANT | Ensure car interior is adequately ventilated. Catch dripping fuel in a suitable container. |
Remove fuel gauge sensor (right).
Remove fuel gauge sensor (left).
| IMPORTANT | Fuel gauge must roughly indicate zero before the left tank opening is opened. If the suction jet pump is faulty, the fuel level in the left tank half may be above the service opening! Large quantities of fuel may emerge on opening! In this event, keep left tank half closed and feed extraction hose through right service opening to left tank half. |
Draw off residual fuel quantity through installation openings.
Fuel filling
Insert special tool 16 1 080 into filler neck.
Special tool 16 1 080 has two different diameters for petrol/gasoline and diesel vehicles!
Slide extraction hose of extractor unit, approx. 40 cm into fuel filler pipe.
Fill fuel from suction extractor unit.
Drawing off after fault in suction jet pump
Draw off right half of tank completely through fuel filler pipe.
Drain surge chamber and fuel filter.
Remove sensor for fuel gauge (left).
Insert extraction hose through sensor opening in tank, fuel (also residual quantity) can be drawn off.
Scheme 35
16 00 100 Checking fuel tank and tank ventilation system for leaks
Special tools required
- «13 3 010»(ref-563232-S25787230422013062700000)
- 16 1 070
- 16 1 171
- 16 1 174
Note. The following procedure is only applicable to vehicles without the tank leak diagnosis module.
Necessary preliminary tasks
- Remove rear right wheel arch trim. See «51 71 041 WHEEL ARCH COVER (M5, 550i)»(ref-201424-S14584311562005102600000) or «51 71 041 WHEEL ARCH COVER (M6, 650i)»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-71-041-removing-and-installingreplacing) .
S85: Unlock quick-release fastener and detach line with evaporation strainer.
| IMPORTANT | Risk of breakage! Carefully remove evaporation strainer with a screwdriver from carbon canister. |
Comply with the following conditions in order to obtain plausible test results
- Content of fuel tank: Maximum 90 % Minimum 13 % (reserve telltale must not light up)
- Park the car in the workshop at least 2 hours before the test so that the fuel temperature is approximately that of the workshop temperature (ideal fuel temperature approx. 10... 20 °C).
- Never refuel the vehicle directly prior to the leak test due to the strong emission of gas by the fresh fuel
Using special tool 16 1 070, seal off opening (1) on carbon canister.
Scheme 36
Scheme 37
Remove fuel filler cap and connect special tool 16 1 174 to fuel filler neck.
Clamp special tool 16 1 174 on fuel filler neck with adjusting wheel (1).
Scheme 38
| IMPORTANT | Set pressure regulator on special tool 16 1 171 fully in "-" direction. |
Using compressed air line (1), connect special tool 16 1 171 to workshop compressed air system (8... 10 bar).
Connect pressure sensor (2) from Diagnosis and Information System with a measuring range of 0...3.5 bar.
| IMPORTANT | Do not connect quick-release coupling (3) of special tool 16 1 171 as yet. |
Scheme 39
Select "Measurement" function on Diagnosis and Information System (DIS).
Set measuring range according to pressure sensor to 0...3.5 bar.
Using pressure regulator on special tool 16 1 171, increase pressure by 0.050 bar.
Connect special tool 16 1 174 to quick-release coupling of special tool 16 1 171.
Using pressure regulator on special tool 16 1 171, reset pressure in fuel tank to 0.050 bar above atmospheric.
| IMPORTANT | Do not under any circumstances increase pressure by more than 0.100 bar as this would result in damage to the fuel tank and the fuel tank venting system. |
Using special tool 13 3 010 , disconnect delivery line (1) from special tool 16 1 171 to fuel filler neck.
Allow a rest period of approx. 20 sec.
Read off and note down starting pressure value.
Wait approx. 60 sec.
Read off final pressure value and compare with starting pressure value.
Measurement evaluation
| Pressure drop between 0.008 and 0.010 bar. | Repeat measurement. |
|---|---|
| Pressure drop in 60 secs. greater than 0.010 bar. | System leaking beyond permitted levels. CARRY OUT LEAK TEST . |
16 00 510 Conducting leak test on fuel tank and tank venting system
| IMPORTANT | On vehicles with tank leak diagnosis modules (DMTL), do not work with external pressurization as the tank ventilation system will leak under this condition. |
On account of emerging fuel vapors, carry out all work in well ventilated rooms. Or use a suitable extractor system.
Observe country-specific accident prevention and occupational safety regulations.
Note. The following procedure is only applicable to vehicles with the tank leak diagnosis module (DMTL).
For vehicles without tank leak diagnosis module
Pressurize FUEL TANK AND TANK VENTING SYSTEM.
During the leak test with a leak detector, be sure to follow the operating instructions of the equipment manufacturer.
Note. Select "Tank leak diagnosis module (DMTL)" on Diagnosis and Information System (DIS).
- The leak diagnosis pump pressurizes the fuel tank and tank ventilation system for 30 sec.
- If pressure is needed for longer than 30 sec., press "Activate" button again after 30 sec.
The leak test can be carried out with a leak detector.
Possible causes may be
- Tank cap leaking (check TANK CAP PRESSURE RELIEF VALVE)
- Tank ventilation lines leaky (fuel tank-activated carbon canister-tank ventilation valve)
- Tank ventilation valve leaky (engine compartment)
- Fuel level sensor flange on tank leaking
Scheme 40
16 11 030 Removing and installing fuel tank (550i, M5)
| IMPORTANT | After installation of fuel tank/prior to first engine start-up: Check electrical resistance between earthing/grounding cable (fuel filler pipe) and wheel hub. Measured value approx. 0.6 ohms Fill fuel tank with min. 5 l fuel. |
Necessary preliminary tasks
- Draw off «fuel from fuel tank»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-00-005-draining-and-filling)
- Remove rear right wheel arch trim. See «51 71 041 REMOVING AND INSTALLING/REPLACING REAR LEFT OR RIGHT WHEEL ARCH COVER»(ref-201424-S14584311562005102600000) .
- Remove complete propeller shaft. See «26 11 000 REMOVING AND INSTALLING COMPLETE PROPELLER SHAFT (CONSTANT-VELOCITY JOINT)»(ref-263250-S36362427022007090500000) .
- Remove handbrake Bowden cables from wheel carrier and unclip from fuel tank. See «34 41 120 REMOVING AND INSTALLING / REPLACING BOTH HANDBRAKE BOWDEN CABLES»(ref-263254-S03933523792007090500000) .
- Remove right tension strut for rear axle. See «33 33 001 REPLACING LEFT OR RIGHT REAR AXLE CARRIER COMPRESSION STRUT»(ref-263253-S37847843642007090500000) .
Unfasten nut.
Tightening torque, see 16 12 11AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Scheme 41
Unfasten hose clip (1).
Disconnect filler vent line (4) from fuel filler pipe.
Vehicles with petrol/gasoline engines
Disconnect service vent line (2) from carbon canister.
Unclip both lines and remove retaining clip (3).
Installation
Replace hose clip (1).
Scheme 42
Vehicles with petrol/gasoline engines
Unlock and disconnect plug connections (1) of feed line.
If necessary, disconnect line (2) for independent heating.
Vehicles with diesel engines
Unlock and disconnect feed and return lines.
If necessary, disconnect line for independent heating.
Scheme 43
Release screw.
Tightening torque, see 16 11 1AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Scheme 44
Heavily support the fuel tank.
Scheme 45
Release screws for tightening straps on left and right and remove tightening straps.
Tightening torque, see 16 11 1AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Scheme 46
Installation
Note rubber mount with spacer bush.
Wide collar on spacer bush points to screw head.
Scheme 47
Lower tank until plug (1) on top side of right tank half is accessible.
Unlock plug (1) and detach from delivery unit.
Note. Get a second person to feed out vent lines to wheel arch while removing tank towards bottom.
Scheme 48
Installation
Feed vent lines (1) and (2) through body.
Do not kink lines.
Scheme 49
16 11 030 Removing and installing fuel tank (650i, M6)
| IMPORTANT | After installation of fuel tank/prior to first engine start-up: Check electrical resistance between earthing/grounding cable (fuel filler pipe) and wheel hub. Measured value approx. 0.6 ohms Fill fuel tank with min. 5 l fuel. |
Necessary preliminary tasks
- Draw off «fuel from fuel tank»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-00-005-draining-and-filling)
- Remove rear right wheel wheel and arch trim. See «51 71 041 REMOVING AND INSTALLING/REPLACING REAR LEFT OR RIGHT WHEEL ARCH COVER»(/bmw/m6/e63e64-2005-2010/remont/door-locks-anti-theft-systems/#body-equipment-repair__51-71-041-removing-and-installingreplacing) .
- Remove complete propeller shaft. See «26 11 000 REMOVING AND INSTALLING COMPLETE PROPELLER SHAFT (CONSTANT-VELOCITY JOINT)»(/bmw/m6/e63e64-2005-2010/remont/driveshaft-universal-joints/#propeller-shaft-repair__26-11-000-removing-and-installing) .
- Remove handbrake Bowden cables from wheel carrier and unclip from fuel tank. See «34 41 120 REMOVING AND INSTALLING/REPLACING BOTH HANDBRAKE BOWDEN CABLES»(/bmw/m6/e63e64-2005-2010/remont/mechanical-hydraulic/#brakes-repair__34-41-120-removing-and-installingreplacing) .
- Remove right tension strut for rear axle. See «33 33 001 REPLACING LEFT OR RIGHT REAR AXLE CARRIER COMPRESSION STRUT»(/bmw/m6/e63e64-2005-2010/remont/axle-shafts/#rear-axle-repair__33-33-001-replacing-left-or) .
Slacken nut (1).
Unfasten hose clip (2).
Disconnect filler vent line (3) from fuel filler pipe.
Installation: Tightening, see 16 12 11AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Seal nut with underseal again.
Replace hose clip.
Scheme 50
Release screws and remove heat shield (1).
Scheme 51
Unlock and disconnect vent line (1) from carbon canister. Unclip line from mountings (2) and mountings in wheel arch and feed out vent line.
Scheme 52
Unlock and disconnect plug connections (1) of feed line.
Scheme 53
Release screw. Tightening torque 16 11 1AZ
Scheme 54
Heavily support the fuel tank
Scheme 55
Release screws for tightening straps on left and right and remove tightening straps. Tightening torque, 16 11 1AZ .
Scheme 56
Installation: Note rubber mount with spacer bush. Wide collar on spacer bush points to screw head.
Scheme 57
Lower tank until plug (1) on top side of right tank half is accessible. Unlock plug (1) and detach from delivery unit.
Note. Get a second person to feed out vent lines to wheel arch while removing tank towards bottom.
Scheme 58
Installation: Feed vent lines (1) and (2) through body. Do not kink lines.
Scheme 59
16 11 130 Checking tank cap pressure relief valve
Special tools required
- 13 3 010
- 16 1 171
- 16 1 172
- 16 1 173. See «FUEL SUPPLY SYSTEM - SPECIAL TOOLS»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-special-tools) .
Necessary preliminary tasks
- Remove tank cap
Turn pressure regulator on special tool 16 1 171 counterclockwise up to stop.
Connect special tool 16 1 171 via compressed air line (1) to workshop/garage compressed air system (8...10 bar).
Connect pressure sensor (2) of Diagnosis and Information System with a measuring range of 0...25 bar.
Scheme 60
Select special tool 16 1 172 or 16 1 173 matching vehicle's filler cap and attach to quick release coupling of special tool 16 1 171.
Install tank cap on selected special tool.
Scheme 61
Check testing equipment for leaks!
Select "Measurement" function on Diagnosis and Information System (DIS).
Increase pressure by 0.2 bar with pressure regulator on special tool 16 1 171.
Using special tool 13 3 010, disconnect supply line (1) from special tool 16 1 171 to fuel filler neck.
Allow a rest period of approx. 20 secs.
Read off and note down starting pressure.
Wait approx. 120 secs.
Read off final pressure value and compare with starting pressure value.
Scheme 62
Measurement evaluation
- Pressure drop up to 0.01 bar: System OK
- Pressure drop over 0.02 bar: System leaking beyond permitted levels
If system is leaking, check connection points for leaks.
Check tank cap pressure relief valve.
Follow same test procedure as for "Checking testing equipment for leaks".
Increase pressure by 0.3 bar with pressure regulator on special tool 16 1 171.
Measurement evaluation
- Pressure drop up to 0.01 bar: Tank cap pressure relief valve OK
- Pressure drop over 0.02 bar: Tank cap is leaking and must be replaced
16 12... Checking repumping function of suction-jet pump with BMW diagnosis system
| IMPORTANT | Ensure adequate ventilation in the place of work! Ensure absolute cleanliness when working on the open fuel tank. Contaminants in the fuel tank can impair driving operation or may even result in vehicle breakdown! Catch escaping fuel in a suitable container. |
Necessary preliminary tasks
- Fill level must be < or = 28 l If necessary, draw off fuel from fuel tank
- Pour two to three liters of fuel into the left tank chamber via the flange opening
- Connect diagnosis system Path: Brief test KOMBI Instrument cluster Diagnosis control unit functions Diagnosis requests Tank sensor 1, tank sensor 2
Note. Tank sensor 1 = right tank sensor Tank sensor 2 = left tank sensor
Start engine.
Compare display for left and right tank chambers.
Repumping function OK
If fill level of tank sensor 2 (left chamber) is falling (approx. one liter per minute).
Repumping function not OK
If fill level of tank sensor 2 (left chamber) is stable or rising.
16 12 000 Removing and installing/replacing fuel gauge sensor (complete right sensor unit)
Special tools required
- 16 1 020. See «FUEL SUPPLY SYSTEM - SPECIAL TOOLS»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-special-tools) .
| IMPORTANT | Ensure adequate ventilation in the place of work! Ensure absolute cleanliness when working on the open fuel tank. Contaminants in the fuel tank can impair driving operation or may even result in vehicle breakdown! |
Necessary preliminary tasks
- Draw «off fuel completely from fuel tank»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-00-005-draining-and-filling) .
- Remove rear seat. See «SEATS -- REPAIR (5-SERIES)»(ref-263255) or «SEATS - REPAIR (6-SERIES)»(/bmw/m6/e63e64-2005-2010/remont/seats/#seats-repair) .
- Remove «left sensor unit»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-12-001-removing-and-installingreplacing) .
Fold carpet (1) forwards.
Detach insulating mat (2) above left and right sensor units at perforation and fold back towards rear. Pop out rubber plugs here.
Fold back rubber mat (2).
Scheme 63
| IMPORTANT | Do not damage gasket. Release nuts (1) on left and right. Fold metal cover of left and right sensor units upwards. |
Scheme 64
| IMPORTANT | Fuel line is pressurized. Catch escaping fuel in a suitable container. |
If necessary, unlock and disconnect plug connection (1) of right sensor unit.
If necessary, release and disconnect hose (2) for independent heating (E60 only).
Scheme 65
Release rotary catch of left and right sensor units with special tool 16 1 020. See FUEL SUPPLY SYSTEM - SPECIAL TOOLS .
Installation
Replace rubber seal on left and right.
Tightening torque, see 16 14 2AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Scheme 66
| IMPORTANT | Risk of breakage! Carefully raise connecting cover. In so doing, do not pull excessively on connecting piece of fuel feed. |
Installation
When installing connecting cover, make sure that lug (1) in opening (2) engages fuel tank.
During torque tightening, notch (3) on screw cap can be clearly heard and felt to engage toothed segment (4) on fuel tank.
Scheme 67
Secure a cable to hose pack through left service opening in tank.
The cable facilitates reinstallation of the hose pack.
Carefully remove right sensor unit from fuel tank.
| IMPORTANT | Surge chamber is filled with fuel. Drain surge chamber through upper opening (1). Catch fuel in a suitable container. |
Feed hose pack out of fuel tank.
Scheme 68
Installation
The new sensor unit is supplied with a plastic cover over the hose pack.
Secure the cable pulled through the tank during removal to the eyelet on the plastic cover.
Carefully feed hose pack through fuel tank using cable.
| IMPORTANT | The lines on the connection are turned to the sensor unit as the hose pack is fed in. Turn sensor unit in the same direction of rotation and align. It is absolutely essential to avoid kinking the hoses. |
Remove the plastic cover after feeding in the hose pack.
Scheme 69
Replacing fuel level sensor
Unlock and disconnect plug (2).
Release catches (1) and pull fuel level sensor out of unit.
16 12 001 Removing and installing/replacing fuel gauge sensor (complete left sensor unit) and Fuel Filter********M5
Special tools required
- 16 1 020. See «FUEL SUPPLY SYSTEM - SPECIAL TOOLS»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-special-tools) .
| IMPORTANT | Ensure adequate ventilation in the place of work! Ensure absolute cleanliness when working on the open fuel tank. Contaminants in the fuel tank can impair driving operation or may even result in vehicle breakdown! |
Necessary preliminary tasks
- Draw off «fuel completely from fuel tank»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-00-005-draining-and-filling) .
- Remove rear seat. See «SEATS -- REPAIR (5-SERIES)»(ref-263255) or «SEATS - REPAIR (6-SERIES)»(/bmw/m6/e63e64-2005-2010/remont/seats/#seats-repair) . After completing work
- Check «repumping function of suction-jet pump»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-12-checking-repumping-function-of) .
Fold carpet (1) forwards.
Detach insulating mat (2) at perforation and fold back towards rear, pop out rubber plugs here.
Fold back rubber mat.
Scheme 70
| IMPORTANT | Do not damage gasket. Release nuts (1) and fold back metal cover. |
| IMPORTANT | Fuel line is pressurized. Catch escaping fuel in a suitable container. |
Disconnect plug connection.
Release and disconnect feed line (1).
M57TU
Release and disconnect feed and return lines.
Scheme 71
| IMPORTANT | Fuel gauge must roughly indicate zero before the left tank opening is opened. If the suction jet pump is faulty, the fuel level in the left tank half may be above the service opening! Large quantities of fuel may emerge on opening! In this event, keep left tank half closed and feed extraction hose through right service opening to left tank half. |
Release screw cap with special tool 16 1 020.
Installation
Replace rubber gasket.
Tightening torque, see 16 14 2AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
| IMPORTANT | Risk of breakage! Carefully raise fuel level sensor until sensor flange projects out of tank opening. In so doing, do not pull excessively on connecting piece of fuel return. |
Installation
When installing fuel level sensor, make sure that lug (1) engages opening (2) in fuel tank.
During torque tightening, notch (3) on screw cap can be clearly heard and felt to engage toothed segment (4) on fuel tank.
Carefully remove left sensor unit from tank.
Disconnect line (1) to fuel filter and seal off at fuel filter.
Disconnect suction jet pump from fuel filter.
To do so, press catch (2) downwards and detach suction jet pump.
| IMPORTANT | Look out of escaping fuel. Catch fuel in a suitable container. |
Scheme 72
E60/M57TU only
Carefully remove left sensor unit from tank.
Unlock line (1).
Pull suction jet pump out of holder.
To do so, press catch (2) downwards and detach suction jet pump (2).
Scheme 73
Unlock and disconnect plug (1) of hose pack.
Note. Release plug by pressing lock and disconnect.
Scheme 74
Replacing fuel level sensor
Unlock plug (2) and press out in direction of arrow.
Release catches (1) and pull fuel level sensor out of unit.
Disconnect cable from pressure regulator and feed out of cable gland.
Scheme 75
16 12 010 Removing and installing/replacing carbon canister (5-Series)
Necessary preliminary tasks
- Remove rear right wheel arch trim.
Detach lines (1 and 2) from carbon canister (3).
Unfasten screws.
Installation
Tightening torque, see 16 13 2AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Remove carbon canister (3).
Scheme 76
16 12 010 Removing and installing/replacing carbon canister (6-Series)
Release screws and remove heat shield (1).
Scheme 77
Disconnect lines (1) from carbon canister (3). Unfasten screws (2). Tightening torque, see 16 13 2AZ in 16 13 TANK VENTILATION . Remove carbon canister (3).
Scheme 78
16 12 010 Removing and installing/replacing carbon canister with DM-TL (5-Series)
DM-TL = diagnosis module-tank leakage
Necessary preliminary tasks
- Remove rear right wheel.
- Remove right wheel arch trim.
Unlock and detach lines (1) to (3).
Scheme 79
- Scavenging air line
- Vent line to fuel tank
- Evaporation line
Unlock and disconnect plug (1).
Release screws and remove carbon canister with DM-TL towards bottom.
Tightening torque, see 16 13 2AZ in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
Scheme 80
16 12 010 Removing and installing/replacing carbon canister with DM-TL (6-Series)
DM-TL = diagnosis module-tank leakage
Release screws and remove heat shield (1).
Scheme 81
Disconnect plug (1) and lines (2) from carbon canister. Release screws (3). Tightening torque, see 16 13 2AZ in 16 13 TANK VENTILATION .
Scheme 82
Carefully lower carbon canister (1), disconnect line (2) from tank leak diagnosis module and remove carbon canister.
Scheme 83
16 13 015 Removing and installing/replacing tank leak diagnosis module (if equipped)
Necessary preliminary tasks
- Remove carbon canister with tank leak diagnosis module.
Release screws (1). Tightening torque, see 16 13 3AZ in 16 13 TANK VENTILATION . Disconnect tank leak diagnosis module (2) from carbon canister in direction of arrow.
Scheme 84
Installation: Replace sealing ring.
16 14 017/21 Removing and installing/replacing fuel filter in tank
Special tools required
- 16 1 020 See «FUEL SUPPLY SYSTEM - SPECIAL TOOLS»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-special-tools) .
Recycling
Fuel escapes when fuel lines are detached. Have a suitable collecting container ready.
Catch and dispose of escaping fuel.
Observe country-specific waste-disposal regulations.
| IMPORTANT | Ensure adequate ventilation in the place of work! Avoid skin contact (wear gloves)! Ensure absolute cleanliness when working on the open fuel tank. Contaminants in the fuel tank can impair driving operation or may even result in vehicle breakdown! Before starting the engine for the first time |
- Fill fuel tank with at least 5 liters of fuel.
Necessary preliminary tasks
- «Draw off fuel from fuel tank»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-00-005-draining-and-filling)
- Remove «REAR SEAT (550i)»(ref-273241-S31789402062007120400000) , «REAR SEAT (M5)»(ref-263255-S17746183372007090500000) or «REAR SEAT, NORMAL (6-SERIES)»(/bmw/m6/e63e64-2005-2010/remont/seats/#seats-repair) After completing work
- «Check repumping function of suction-jet pump»(/bmw/m6/e63e64-2005-2010/remont/fuel-system/#fuel-supply-system-repair__16-12-checking-repumping-function-of)
Fold carpet (1) forwards.
Detach insulating mat (2) at perforation and fold back towards rear, pop out rubber plugs here.
Fold back rubber mat.
| IMPORTANT | Do not damage gasket. |
Release nuts (1) and fold back metal cover.
| IMPORTANT | Fuel line is pressurized. Catch escaping fuel in a suitable container. |
Disconnect plug connection.
Release and disconnect feed line (1).
M57TU
Release and disconnect feed and return lines.
| IMPORTANT | Fuel gauge must roughly indicate zero before the left tank opening is opened. |
If the suction jet pump is faulty, the fuel level in the left tank half may be above the service opening!
Large quantities of fuel may emerge on opening!
In this event, keep left tank half closed and feed extraction hose through right service opening to left tank half.
Release screw cap with special tool 16 1 020 .
Installation
Tightening torque 16 14 2AZ . See FUEL PUMP .
Scheme 85
| IMPORTANT | Risk of breakage! Carefully raise fuel level sensor until sensor flange projects out of tank opening. In so doing, do not pull excessively on connecting piece of fuel return. |
Installation
Replace rubber gasket.
When installing fuel level sensor, make sure that lug (1) engages opening (2) in fuel tank.
Fit screw cap without using a tool and tighten hand-tight.
Then tighten screw cap with special tool 16 1 020 until notch (3) points to marking (4).
| IMPORTANT | Look out of escaping fuel. Catch fuel in a suitable container. |
Carefully remove left sensor unit from tank.
Disconnect line (1) to fuel filter.
Disconnect line (1) to fuel filter and seal off at fuel filter.
Disconnect suction jet pump from fuel filter.
To do so, press catch (2) downwards and detach suction jet pump.
E60/M57TU only
Carefully remove left sensor unit from tank.
Unlock line (1).
Pull suction jet pump out of holder.
To do so, press catch (2) downwards and detach suction jet pump (2).
Unlock and disconnect plug (1) of hose pack.
Note. Release plug by pressing lock and disconnect.
Replacing fuel level sensor
Unlock plug (2) and press out in direction of arrow.
Release catches (1) and pull fuel level sensor out of unit.
Disconnect cable from pressure regulator and feed out of cable gland.
16 14 500 Removing and installing/replacing control unit for electric fuel pump (5-Series)
| IMPORTANT | Read and comply with notes on protection against electrostatic damage (ESD) protection. |
Necessary preliminary tasks: Remove RIGHT LUGGAGE COMPARTMENT WHEEL ARCH TRIM .
Unfasten plug connection (1) and disconnect. Unscrew nuts. Tightening torque 16 14 4AZ . Remove electric fuel pump control unit.
Scheme 86
After installation: Code control unit.
16 14 500 Removing and installing/replacing control unit for electric fuel pump (6-Series)
| IMPORTANT | Read and comply with notes on protection against electrostatic damage (ESD) protection. |
Unfasten plug connection (1) and disconnect. Unscrew nuts. Tightening torque 16 14 4AZ . Remove electric fuel pump control unit.
Scheme 87
After installation: Code control unit.
See also:
• FUEL SUPPLY SYSTEM - SPECIAL TOOLS
• 51 71 041 WHEEL ARCH COVER (M6, 650i)
• FUEL SUPPLY SYSTEM - TIGHTENING TORQUES
• FUEL SUPPLY SYSTEM - TIGHTENING TORQUES
• 26 11 000 REMOVING AND INSTALLING COMPLETE PROPELLER SHAFT (CONSTANT-VELOCITY JOINT)
• 34 41 120 REMOVING AND INSTALLING/REPLACING BOTH HANDBRAKE BOWDEN CABLES
• 33 33 001 REPLACING LEFT OR RIGHT REAR AXLE CARRIER COMPRESSION STRUT
• FUEL SUPPLY SYSTEM - TIGHTENING TORQUES
• SEATS - REPAIR (6-SERIES)
• 16 13 TANK VENTILATION
• FUEL PUMP
• (ESD)
• ARMREST
• CARRY OUT LEAK TEST
• fuel from fuel tank
• left sensor unit
• repumping function of suction-jet pump