Geely EC715 2009, Workshop Manual

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2.9.7 Diagnostic Information and Procedures
2.9.7.1 Diagnosis Description
Refer to 2.9.2.1 Description and Operation Get familiar with the system functions and operation before start system diagnostics, so
that it will help to determine the correct diagnostic steps, more importantly, it will also help to determine whether the customer
described situation is normal.
2.9.7.2 Visual Inspection
– Check installed aftermarket equipment that may affect the operation of the lubrication system.
–
Check easy to access system components to identify whether there are significant blockages or leakage. If there is leakage,
confirm whether it is engine oil leak.
– Check whether the oil filter is dirty or blocked. If necessary, replace it.
2.9.7.3 Abnormal Engine Oil Consumption Diagnostic
When the engine oil consumption (non-leaking) exceeds the acceptable range, abnormal engine oil consumption diagnostic must
be carried out.
Step 1
Check whether there is engine oil leakage.
Yes
Refer to 2.9.7.5 Engine Oil Leak Diagnostic
No
Step 2 Check whether the engine oil viscosity is abnormal. Check whether poor quality engine oil is used.
Yes
Replace the oil filter and engine oil
No
Step 3 Check whether the vehicle sustained high speed / or excessive use.
Yes
Service the engine.
No
Step 4
Check whether the crankcase ventilation system is blocked and whether the components are working
correctly.
Yes
Replace the faulty parts.
No
Step 5
Check whether the valve conduit / or the valve rod is worn, whether the valve rod oil seal is worn, missing
or improperly installed.
Yes
Repair the faulty part.
2-506 Lubricating System JL4G18-D Engine
EC718/EC718RV EC715/EC715RV 10/2009