CAUSE | METHOD OF ELIMINATION |
After turning on the ignition, the oil pressure indicator light does not light | |
| The oil pressure sensor is faulty | To check the sensor, turn on the ignition, remove the wire from the sensor and short it to ground. If the indicator light comes on, replace the oil pressure sensor |
| Broken wire to oil pressure sensor, oxidation of contacts | It is eliminated by checking the serviceability of the wires and cleaning the contacts |
| Light bulb failure | It can be fixed by replacing the light bulb |
Oil pressure warning light does not go out when engine speed increases | |
| High oil temperature | When the engine speed increases, the indicator light should go out |
After starting the engine, the oil pressure warning light does not go out | |
| The oil pressure sensor is faulty | It is eliminated by checking and replacing the oil pressure sensor |
| Low oil pressure, which can occur due to low oil level in the crankcase | Add oil to the crankcase |
| The wire connecting the oil pressure sensor and the warning light is shorted to ground | To check, turn on the ignition and remove the wire from the oil pressure sensor; if the light goes out, find the place where the wire is shorted to ground and insulate it |
Low oil pressure throughout the entire engine speed range | |
| Low oil level in crankcase | It is eliminated by adding oil to the normal level |
| The oil receiver mesh is clogged | Eliminated by cleaning the mesh and oil intake pipe |
| The oil intake pipe is poorly secured | Secure the oil pickup pipe |
| Wear of oil pump parts | Remove the oil pump and check its condition |
| Increased clearance in the crankshaft main bearings | In this case, disassemble and repair the engine |
Low oil pressure at engine idle | |
| The pressure reducing valve is stuck in the open position | Remove the valve, clean it and check its operation |
Increased oil pressure at engine speeds over 2000 rpm | |
| The pressure reducing valve does not open | Remove the valve, clean it and check its operation |
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