Check the engine compression, ch. no. 12020001-

/ 9-3 (9400) / 2001 / 2. Engine / Basic engine, 4-cylinder diesel / Adjustment/replacement / Check the engine compression, ch. no. 12020001-

1.	Remove the upper engine cover and charge air pipe.

2.	Disconnect the glow plugs.

3.	Undo and remove the glow plugs.

4.	Release both control module connections from the fuel injector pump.

5.	Connect a compression meter with a range between 10 and 40 bar to the glow plug hole using Adapter, compression test diesel 83 95 345.

6.	Run the starter for approx. 4 seconds at a speed of at least 150 rpm. The maximum permitted difference between the cylinders is 10%.

7.	Disconnect the compression gauge and adapter.

8.	Connect the connector to the fuel injection pump control module.

9.	Fit the glow plugs. Tightening torque: 10 Nm (7.5 lbf ft).

10.	Connect the glow plugs.

11.	Refit charge air pipe and engine cover.

12.	Clear any fault codes.

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