Porshe 911 (997). Manual - part 167

28 70 20 Removing and installing spark plugs - as of
MY 2005

- Preliminary work
- Removing
- Installing
- Subsequent work

Tools

Designation

Type

Number Explanation

socket wrench insert

special tool

300

spark plug socket
wrench

commercially available
tool

NR.14

3/8" extension, 16°
moveable

commercially available
tool

NR.15

Preliminary work

825

Preliminary work

Note

To remove and install the wheel bolts use the prescribed special tool socket wrench insert 300.

1. Remove rear wheels.→ 440519 Removing and installing wheel.

Removing

Removing spark plugs

Shield for ignition coils

1. Remove the 2 M6 x 20 fastening screws -arrows- for the shields on both cylinder heads and remove

the plates.

2. Unplug cable plug for the ignition coils. To do this, slide the rubber grommets upward first. Press

locking tabs on the respective ignition coil and pull off the individual plugs. In the interest of better
accessibility, unplug the cable plugs for the solenoid hydraulic valves.

Screws for ignition coils

3.

Diagnostic system: reading out fault memory and activating systems

Preliminary work

826

Loosen two M6 x 25 fastening screws -arrows- each per ignition coil and remove the 6 ignition
coils individually.

ATTENTION

Incorrect tool for changing the spark plugs!

Ceramic body breaks!

• 

→ Only use the approved tool spark plug socket wrench NR.14 and 3/8" extension, 16° moveable NR.15.

4. Unscrew the spark plugs using the tool spark plug socket wrench NR.14 with  3/8" extension, 16°

movable NR.15

.

Installing

Installing spark plugs

ATTENTION

Incorrect tool for changing the spark plugs!

Ceramic body breaks!

• 

→ Only use the approved tool spark plug socket wrench NR.14 and 3/8" extension, 16° moveable NR.15.

1. Install spark plug with spark plug socket wrench NR.14 and  3/8" extension, 16° movable

NR.15

. → Tightening torque: 22 ftlb. If the spark plugs will be removed and installed again for

another activity, the tightening torque is reduced. → Tightening torque: 19 ftlb.

2. Insert ignition coils in the spark-plug recesses and tighten using two M6 x 25 fastening screws each.

→ Tightening torque: 7.5 ftlb.

 . Then connect the cable plug and position the rubber grommet on

the coils.

3. Insert the shield again and fit using two fastening screws. → Tightening torque: 7.5 ftlb. .

Subsequent work

Diagnostic system: reading out fault memory and activating systems

Removing spark plugs

827

Reworking

Note

To remove and install the wheel bolts use the prescribed special tool socket wrench insert 300.

1. Mount rear wheels. → 440519 Removing and installing wheel - installing.

997110, 997111, 997120, 997121, 997310, 997311, 997320, 997321, 997410, 997411, 997430, 997431,
997610, 997611, 997620, 997621

WARNUNG

Gefahr des Verlusts der Text-Bild-Zuordnung beim Ausdruck.

Aus technischen Gründen kann derzeit nicht ausgeschlossen werden, dass trotz
einwandfreier Darstellung auf dem Bildschirm beim Ausdruck der
Zusammenhang von Text und zugehörigem Bild verloren geht.

• 

Wird der Fehler nicht bemerkt, besteht die Gefahr, daß Arbeiten nicht korrekt
durchgeführt werden und es dadurch zu Personen- und Sachschäden kommt.

• 

→ Vergleichen Sie deshalb nach dem Druckvorgang unbedingt die Ausdrucke mit der
Bildschirmdarstellung. Korrigieren Sie die Ausdrucke im Fehlerfall so, daß der Inhalt der
Bildschirmdarstellung zutreffend wiedergegeben wird.

WARNING

Danger of losing text-figure correspondence when printing out.

For technical reasons, it can currently not be ruled out that the correspondence
between text and associated figure can be lost when it is printed out, even though
the display on the screen is correct.

• 

If the fault is not noticed, there is the danger that work will not be performed
correctly which can cause injury and damage.

• 

→ Therefore, always compare printouts with the screen display after printing them out. Correct
the printouts if they are faulty so that the content of the screen display matches that on the
printouts.

AVERTISSEMENT

Risque de perte de la correspondance texte-illustration lors de l'impression papier.

Diagnostic system: reading out fault memory and activating systems

Reworking

828