Engine compression test
Engine compression test |
To remove |
1. |
Man:
Put the gear lever in neutral.
Aut:
Put the selector lever in position P. Remove the key from the ignition switch.
|
2. |
Remove relay no. 8 in the
Underhood electrical centre 342
.
|
3. |
Connect
83 93 886 Diagnostics cable, LH system
to relay holder sleeves 87 and 30. Make sure that the switch is in the OFF position.
|
4. |
Remove the cover over the ignition coils, undo the ignition coils and move them aside.
|
5. |
Remove the spark plugs.
|
6. |
Fit the Motometer compression tester for petrol engines to cylinder 1 with a new card.
|
7. |
Run the starter motor using the test lead switch until the needle stops rising.
|
8. |
Repeat the measurement procedure on the other cylinders. For minimum compression pressure, see
General data
.
|
To fit |
1. |
Fit the spark plugs.
Tightening torque 20 Nm (15 lbf ft). |
2. |
Fit the ignition coils.
Tightening torque 8 Nm (6 lbf ft). |
3. |
Fit the cover over the ignition coils.
|
4. |
Remove the test cable and put back relay no. 8.
|