939010387 - 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS

- Disconnect the engine management control unit electrical connections.    Op. 1056F82 CONTROL UNIT SINGLE OF INJECTION IGNITION SYSTEM R R - Insert the test equipment into one of the spark plug seats.- Turn the engine over several times, using the starter motor, keeping the accelerator and clutch pedals pressed.

Make sure that there are no leaks from the test equipment connector.

- Repeat the test on the remaining cylinders taking care to zero the instrument each time.- Check that there is not a great difference between the pressure readings for the cylinders.- Connect the electrical connections to the engine management control unit.