| Excessive engine oil consumption |
- Check for oil leaks.
- Check for worn valve guide(s) (see
VALVE INSPECTION
) or worn valve stem seal(s) (see
VALVE, SPRING, AND VALVE SEAL REMOVAL
).
- Check for damaged or worn piston ring(s) (see
PISTON RING REPLACEMENT
).
- Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) (see
BLOCK AND PISTON INSPECTION
).
|
Check the maintenance records as engine oil that is worn out burns off at a higher rate |
| Low oil pressure indicator stays on |
- Check the engine oil level (see ENGINE OIL LEVEL CHECK
).
- Do the low oil pressure indicator circuit troubleshooting (Short) (see LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (SHORT)
).
- Test the oil pressure switch (see OIL PRESSURE SWITCH TEST
).
- Check the engine oil pressure (see OIL PRESSURE TEST
).
- Check the oil filter for clogging.
- Check the oil screen for clogging.
- Check the relief valve (see OIL PUMP OVERHAUL
).
- Test the oil pump (see OIL PUMP INSPECTION
).
|
A wire shorted to ground between the PCM and the oil pressure switch |
| Low oil pressure indicator does not come on with the ignition switch in ON (II) |
- Do the low oil pressure indicator circuit troubleshooting (Open) (see LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (OPEN)
).
- Test the oil pressure switch (see OIL PRESSURE SWITCH TEST
).
|
An open in the wire between the PCM and the oil pressure switch |