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2 Lubricating oil system XE engine DIAGNOSIS 7-1 7. LUBRICATING OIL SYSTEM XE ENGINE 7.1 FAULT-FINDING TABLE FAULT: ENGINE OIL PRESSURE TOO LOW Possible cause Remedy Engine oil level too low. Top up engine oil to maximum level. External oil leakage. Visually check engine for leakage. Repair if Defective oil-pressure switch. Check the switch. Replace if necessary. Oil fails to meet the required specifications. Renew the engine oil and the oil filter. Oil temperature is too high. Check the oil cooler. Oil mixed with coolant or fuel. Renew the engine oil and the oil filter. Oil feed-through pipe or oil suction pipe loose Check the oil pipes. Repair if necessary. Oil-pressure control valve fails to operate. Check the oil pressure control valve. Inadequate functioning of oil pump. Check the oil pump. Run-out main or connecting-rod bearings. Check the main or connecting-rod bearings. Loose oil nozzle of piston cooler. Check the oil nozzle. Replace if necessary. Defective internal oil pressure pipes or sealing. Check the oil pressure pipes and seals. Contamination between oil-pressure control Check/clean the oil pressure control valve. Contaminated oil filter. Replace the oil filter. 1 ǹ 0008 |