Fuel Rail: Service and Repair
WM 243019 Removing and installing fuel ring pipe
Technical values
Preliminary work for removing fuel ring pipe
DANGER
Vehicle raised incorrectly.
- Danger of fatal injury or material damage should the vehicle fall down.
-> Raise the vehicle at the prescribed jacking points.
1. Place protective covers on the vehicle to avoid damaging the body.
2. Disconnect battery ground lead. -> 2706IN Work instructions after disconnecting the battery 2706IN00 Work instructions after disconnecting the battery
3. Remove engine compartment lid. -> 557819 Removing and installing engine compartment lid
4. Remove air-cleaner element. -> 242419 Removing and installing air-cleaner element Service and Repair
5. Remove rear underbody cover. -> 519419 Removing and installing rear trim 519419 Removing and Installing Cover for Rear Underbody
Removing fuel ring pipe
DANGER
Fuel can escape when fuel line is disconnected.
- Risk of fatal injury!
- Damage to skin.
-> Do not work on fuel system if engine is hot!
-> Do not smoke, avoid fire and naked flames!
-> Wear fuel-resistant protective gloves and goggles.
-> Attach warning sign to vehicle in a clearly visible position.
1. Release and disconnect fuel lines -arrow-. Collect emerging fuel in a suitable container.
2. Unclip fuel line from the bracket -1-.
Fuel line
3. Disengage shift and selector cables or selector lever cable (Tiptronic) and place on the protective cover for the luggage-compartment lid -> 343519 Removing and installing transmission 34351903 Removing and installing transmission.
View of shift and selector cables for 3.2-litre manual transmission
Shift and selector cables for 3.2-litre manual transmission
View of shift and selector cables for 2.7-litre manual transmission
Shift and selector cables for 2.7-litre manual transmission
View of Tiptronic selector lever cable
Tiptronic selector lever cable
4. Release and pull off cable plugs for fuel injectors -1-.
5. Unscrew two Torx screws (M6 x 10) -2- on the fuel gallery.
Left fuel gallery
Right fuel gallery
6. Pull fuel injectors with fuel gallery out of the bores in the intake-air distributor or intake pipe support.
7. Pull out fuel ring pipe -arrow- between intake-air distributor and body.
Fuel ring pipe
8. Guide fuel ring pipe out of the engine compartment.
9. Lever off safety clips -arrow- on fuel injectors.
Fuel injector clips
10. Pull fuel injectors out of the fuel gallery.
Installing fuel ring pipe
1. Replace O-rings -arrows- on the fuel injectors. Lightly grease new O-rings with Optimol MP3.
Fuel injector
2. Press fuel injectors into the fuel gallery.
3. Attach safety clips and make sure they are fitted correctly.
4. Position fuel ring pipe in the engine compartment.
5. Press fuel ring pipe -arrow- in between intake-air distributor and body.
Fuel ring pipe
6. Press fuel injectors with fuel gallery into the bores in the intake-air distributor or intake pipe support.
7. Secure fuel gallery with two Torx screws (M6 x 12) -2-. => Tightening torque: 7.5 ftlb.
8. Connect cable plug for fuel injectors -1-. The plugs must engage audibly.
Left fuel gallery
Right fuel gallery
9. Engage shift and selector cables or selector lever cable (Tiptronic) -> 343519 Removing and installing transmission 34351903 Removing and installing transmission.
View of shift and selector cables for 3.2-litre manual transmission
Shift and selector cables for 3.2-litre manual transmission
View of shift and selector cables for 2.7-litre manual transmission
Shift and selector cables for 2.7-litre manual transmission
View of Tiptronic selector lever cable
Tiptronic selector lever cable
10. Connect fuel line -arrow-. The connector must engage audibly.
11. Clip fuel line into the bracket -1-.
Fuel line
Subsequent work for installing fuel ring pipe
1. Install rear underbody cover. -> 519419 Removing and installing rear trim 519419 Removing and Installing Cover for Rear Underbody
2. Install air-cleaner element. -> 242419 Removing and installing air-cleaner element Service and Repair
3. Connect battery ground lead. -> 2706IN Work instructions after disconnecting the battery 2706IN00 Work instructions after disconnecting the battery
4. Carry out an engine test run. Make sure that the fuel ring pipe is sealed properly, especially at the fuel injectors.
5. Install engine compartment lid. -> 557819 Removing and installing engine compartment lid
6. Read out fault memory and correct any faults that are present. Erase fault memory. -> 033500 On-board diagnosis (OBD) 033500 On-board diagnosis (OBD)