Troubleshooting - KYMCO XCITING 500 Service Manual

4
. LUBRICATION SYSTEM

TROUBLESHOOTING

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