10 - 8
DIAGNOSTICS GUIDE
On discovering an oil leak from the coupling gasket of the flywheel cover or from the oil filter,
proceed with lubrication pressure control.
Install the specific tool.
Specific tools:
Manometer 020193Y
Adapter 020434Y
- Check the system pressure with cold engine and medium-high running speed.
Standard pressure < 6 bar
Lubrication
NOYES
Proceed with replacement of the damaged
components.
Check the adjusting by-pass efficiency
(see chapter 5-FLYWHEEL COVER)
and reset the correct flow.
NOTE: The standard pressures are obtained using oil of the recommended viscosity. A greater viscosity leads to an
increase in system pressure.
On discovering oil consumption greater than 250 gr/1000 km in a run in engine
proceed as described below.
Check the presence of oil in the recovery duct on the filter box.
NO
YES
Proceed with efficiency checks of the
unidirectional reed valve and the drainage hole of
the decanting chamber.
Proceed with seal checks of the thermal unit
(elastic clamps, valve guides and oil seals),
see chapter 7-THERMAL UNIT AND TIMING SYSTEM.
YES
NO
Reset efficiency of the valve
or the drainage hole.
NOTE: Such an anomaly may occur also if the oil level is too high.
In this case the anomaly could be linked also to a malfunctioning of the fuel injection system due to
occlusion of the throttle body ducts (see chapter 9- FUEL INJECTION).
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