Testing compression pressure - RA01001190100X(01-0100)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Operation no. of operation texts and work units or standard texts and flat rates
| Engine | warm up to operating temperature. |
| Spark plugs | remove, install (15-1031) . |
| Engine | crank with starter to expel residues and soot (01-0110) . |
| Diagram sheets (03) | insert into compression tester (01). |
| Compression | push tester (01) into spark plug hole of relevant cylinder. |
| Engine | crank about 8 revolutions with starter (01-0110) . |
| All the cylinders | check in this way. |
| Spark plug recesses | blow out with compressed air. |
| If minimum compression pressure not reached, | check cylinders for leaks (01-0150) . |
TEST DATA FOR ENGINE AT NORMAL OPERATING TEMPERATURE, PRESSURE IN BAR
| Compression pressure at | Normal compression | min. 10 | max. 14 |
| Fuel-optimised | min. 6 | max. 10 | |
| Permissible difference between individual cylinders | max. 1.5 | ||
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