Checking And Adjustment Values
C 24 NE 25 NE 30 NE C 30 LE C 30 NE
Valve play Hydraulic valve lifter, 1 revolution
pretensioning, adjustment necessary only after assembling
Distributor Electronic dwell angle regulation
Integrator voltage Does not apply, 5 to 7 5 to 7 Does not apply, electronically regulated electronically regulated
Compression The compression difference between individual cylinders of an engine
should not be more than 100 kPa (1 bar).
Compression loss The compression loss per cylinder with engine in good condition
is max. 25 %
Idle Speeds, CO Content, Ignition Adjustment
| Engine | Idle speed in rpm | CO content | ||
|---|---|---|---|---|
| in Vol. % | Ign. timing adjust. at idle speed -without vacuum in °CA BTDC | |||
| Manual transmission | Automatic transmission | |||
| C 24 NE 2) | 820 - 880 | 720 - 780 | < 0,4 | 8 - 12 1) |
25 NE
| 30 NE | 775 - 825 | 675 - 725 | max. 0,5 | 10 3) |
|---|---|---|---|---|
| C 30 NE 2) | 670 - 830 | < 0,4 | 8 - 12 1) | |
| C 30 LE | 570 - 670 |
1) Ignition timing adjustment not possible.
2) With self-diagnosis
3) See operation - Ignition, Check and Adjust.