4. LUBRICATION SYSTEM UXV 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 · Faulty oil pump · Incorrect piston ring installation · Worn valve guide or seal Seized engine · No or low oil pressure Oil contamination (White appearance) · Clogged oil orifice/passage · From coolant mixing with oil · 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) · Oil pump drive sprocket broken Damaged water pump mechanical seal · Oil pump damaged (pump shaft) Damaged head gasket · Internal oil leak Oil relief not frequent enough 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