KYMCO XCITING 500, Service Manual

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4
. LUBRICATION SYSTEM
4-3
XCITING 500
TROUBLESHOOTING
Oil level low High oil pressure
•
Oil consumption
•
Pressure relief valve stuck closed
•
External oil leak
•
Plugged oil filter, gallery, or metering orifice
•
Worn piston ring
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Faulty oil pump
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Incorrect piston ring installation
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Worn valve guide or seal
Seized engine
•
No or low oil pressure
Oil contamination (White appearance)
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Clogged oil orifice/passage
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From coolant mixing with oil
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Internal oil leak
─ Faulty water pump mechanical seal
•
Non-recommended oil used
─ Faulty head gasket
─ Water leak in crankcase
Oil contamination
•
Deteriorated oil
No oil pressure
•
Faulty oil filter
•
Oil level too low
•
Worn piston ring (White appearance with water or
•
Oil pump drive chain broken moisture)
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Oil pump drive sprocket broken ─ Damaged water pump mechanical seal
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Oil pump damaged (pump shaft) ─ Damaged head gasket
•
Internal oil leak ─ Oil relief not frequent enough
Low oil pressure Oil pressure warning indicator does not work
•
Pressure relief valve stuck open
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Faulty oil pressure switch
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Clogged oil filter and strainer screen
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Short circuit in the indicator wire
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Oil pump worn or damaged
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Low or no oil pressure
•
Internal oil leak
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Incorrect oil being used
•
Oil level too low