Content .. 135 136 137 138 ..

Porshe 911 (997). Manual - part 137

10. Remove fastening screws for fuel distributor pipe -1- and pull fuel distributor pipe together with

fitted injection valves from the intake distributor. Check sealing rings of injection valves and
replace if necessary.

ATTENTION

Material damage through lowering engine

Cables and coolant hoses can be stretched and torn

•

→ Lower the engine with a jack no more than 40 mm maximum

11. Support the engine with a jack. Unscrew the two collar nuts of the rear engine mounts. Lower the

engine by 30 - 40 mm . Should the period between removal and installation be extended, the engine
must be lifted back into position and temporarily secured with the collar nuts. Attach an
appropriate warning notice.

Screws for intake distributor

12. Remove the four fastening screws of the intake distributor -arrows- . If necessary, use a mirror to

remove the front-most screw. When removing the intake distributor, leave the fore-most screw in
its bore in the intake distributor. Carefully remove the intake distributor from the engine
compartment (carefully release vacuum lines to the switch-over valve). Replace seals.

Note

Cover engine openings (e.g. intake openings, crankcase, oil lines, open reservoirs etc.) cover with a cloth to
avoid dirt and foreign bodies falling in.

13. Cover engine openings with a cloth.

Installing intake distributor, cylinder bank 4-6

1. Clean the sealing surfaces of the intake distributor and crankcase.

Diagnostic system: reading out fault memory and activating systems

Installing intake distributor, cylinder bank 4-6

705

Intake distributor seals

2. Replace the seals in the intake distributor and insert correctly into the grooves of the intake

distributor → Intake distributor seals .

3. Place intake distributor in installation position. At the same time, pull through and lay the vacuum

lines to the switch-over valve.

Screws for intake distributor

Note

If necessary, to ease installation of the intake distributor, insert the rear fastening screw in its bore in the
intake distributor before commencing installation.
The socket for tightening the fastening screws of the intake distributor should be secured with a strip of
insulating tape to prevent them falling out.
If necessary, carry out the work using a small mirror.

4. Screw in and tighten fastening screws of the intake distributor, using a magnet if necessary → Tightening

torque: 7.5 ftlb.

5. Lift engine into position with the car jack and fasten → Tightening torque: 63 ftlb. .

Fuel distributor pipe

Diagnostic system: reading out fault memory and activating systems

Installing intake distributor, cylinder bank 4-6

706

Check sealing rings of injection valves and replace if necessary. Clean sealing surfaces with a lint-free
cloth and apply a thin coat of silicone spray. Insert fuel distributor pipe together with fitted injection
valves into the appropriate openings of the intake distributor and screw in the fastening screws of the fuel
distributor pipe to the intake distributor -1- . Tighten screws → Tightening torque: 7.5 ftlb. .

7. Move cable duct into position on the fuel distributor pipe and clip in → Fuel distributor pipe .

Oil flange

8. Replace oil flange seal. Place oil flange in installation position. Screw in the two fastening screws

of the oil flange -arrows- and tighten → Tightening torque: 7.5 ftlb. .

Oil mist line

9. Fit plastic line between oil mist separator and oil flange → Oil mist line .

Sheetmetal holder

10. Fit sheetmetal holder between servo lines into rubber mounts -arrow- ..

Diagnostic system: reading out fault memory and activating systems

Installing intake distributor, cylinder bank 4-6

707