| Excessive engine oil consumption | Check for oil leaks. Check for worn valve guide(s); except K24Z7 engine See VALVE STEM-TO-GUIDE CLEARANCE INSPECTION (K24Z7) , VALVE STEM-TO-GUIDE CLEARANCE INSPECTION (R18A9) or VALVE STEM-TO-GUIDE CLEARANCE INSPECTION (R18Z1) , K24Z7 engine See VALVE STEM-TO-GUIDE CLEARANCE INSPECTION (K24Z7) , VALVE STEM-TO-GUIDE CLEARANCE INSPECTION (R18A9) or VALVE STEM-TO-GUIDE CLEARANCE INSPECTION (R18Z1) or worn valve seal(s); except K24Z7 engine Valve Clearance Adjustment (Except K24Z7) .Valve, Spring, and Valve Seal Removal and Installation (R18A9) or Valve, Spring, and Valve Seal Removal and Installation (R18Z1) . K24Z7 engine Valve Clearance Adjustment (K24Z7) Valve, Spring, and Valve Seal Removal and Installation (K24Z7) . Check for a damaged or worn piston ring(s); except K24Z7 engine See PISTON, RING, PIN, AND CONNECTING ROD REMOVAL AND INSTALLATION (K24Z7) , PISTON, RING, PIN, AND CONNECTING ROD REMOVAL AND INSTALLATION (R18A9) or PISTON, RING, PIN, AND CONNECTING ROD REMOVAL AND INSTALLATION (R18Z1) , K24Z7 engine See PISTON, RING, PIN, AND CONNECTING ROD REMOVAL AND INSTALLATION (K24Z7) , PISTON, RING, PIN, AND CONNECTING ROD REMOVAL AND INSTALLATION (R18A9) or PISTON, RING, PIN, AND CONNECTING ROD REMOVAL AND INSTALLATION (R18Z1) . Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.); except K24Z7 engine See BLOCK AND PISTON INSPECTION (K24Z7) , BLOCK AND PISTON INSPECTION (R18A9) or BLOCK AND PISTON INSPECTION (R18Z1) , K24Z7 engine See BLOCK AND PISTON INSPECTION (K24Z7) , BLOCK AND PISTON INSPECTION (R18A9) or BLOCK AND PISTON INSPECTION (R18Z1) . | Check the maintenance records as engine oil that is worn out burns off at a higher rate |
| 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) or LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (SHORT) . Test the oil pressure switch; except K24Z7 engine See ENGINE OIL PRESSURE SWITCH TEST (EXCEPT K24Z7) or ENGINE OIL PRESSURE SWITCH TEST (K24Z7) , K24Z7 engine See ENGINE OIL PRESSURE SWITCH TEST (EXCEPT K24Z7) or ENGINE OIL PRESSURE SWITCH TEST (K24Z7) . | An open in the wire between the ECM/PCM and the oil pressure switch |
| Low oil pressure indicator stays on | Check the engine oil level; except K24Z7 engine See ENGINE OIL LEVEL CHECK (EXCEPT K24Z7) or ENGINE OIL LEVEL CHECK (K24Z7) , K24Z7 engine See ENGINE OIL LEVEL CHECK (EXCEPT K24Z7) or ENGINE OIL LEVEL CHECK (K24Z7) . Do the low oil pressure indicator circuit troubleshooting (Open) See LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (OPEN) or LOW OIL PRESSURE INDICATOR CIRCUIT TROUBLESHOOTING (SHORT) . | A wire shorted to ground between the ECM/PCM and the oil pressure switch |
