2. Disconnect plug 3 from the camshaft position sensor (see illustration).
3. Disconnect plugs 1 from the fuel injectors (see illustration 15.2).
4. Connect a compression tester with a pressure measurement range of 10-40 bar to the glow plug socket with the corresponding adapter 2 (see illustration 15.2).
Attention! Do not allow oil or grease to enter the spark plug holes when checking compression.
5. Operate the starter for approximately four seconds, cranking the engine at a speed of at least 300 rpm, and read the compression gauge. The pressure in the cylinders must not differ by more than 1 bar.
6. Disconnect the compression tester with adapter, screw in the glow plugs, and also connect the removed parts.
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