Lubrication
2-2
Troubleshooting
Oil level too low - high oil consumption
● External oil leaks
● Worn piston rings
● Worn valve guide or seal
Oil contamination
● Oil or filter not changed often enough
● Head gasket faulty
● Worn piston rings
Low oil pressure
● Oil level now
● Pressure relief valve stuck open
● Plugged oil pick-up screen
● Oil pump worn
● External oil leaks
High oil pressure
● Pressure relief valve stuck closed
● Plugged oil filter, gallery, or metering orifice
● Incorrect oil being used
No oil pressure
● Oil level low
● Oil Pump drive gear broken
● Oil pump faulty
● Internal oil leakage
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