Diagnostic instruments
file:///D|/Manuales/Para%20recolocar/MOTOS/DUCATI/DUCATI/M796/wsm/EN/M796_ABS_11_6_13.36.1.html[11/12/2015 18:40:27]
On the DDS diagnosis instrument (4), select the “Measurement module” function by pressing the corresponding icon; then
press the “Cylinder Compression” icon (D) followed by the “Start” icon (E).
The letter A is displayed on the screen to indicate the connector of the Measurement Module cable (3).
Open the throttles completely.
Turn over the engine with the starter motor until the pressure stops rising.
Check the pressure in each cylinder:
-standard value: 11 to 12 bar;
-minimum value: 10 bar;
-maximum permissible difference between cylinders: 2 bar.
An excessively high pressure value can be caused by:
-build up of deposits in the combustion chamber.
An excessively low pressure value can be caused by:
-gas escaping between the cylinder head and the barrel;
-worn valve seats;
-bent valve stems;
-incorrect valve clearances;
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