KRYOTEC ENGINE 12 ENGINE LUBRICATION DIAGNOSTIC TABLE CONDITION POSSIBLE CAUSES CORRECTION OIL LEAKS 1. (a) Gaskets and O-rings. Misaligned or damaged. 1. (a) Replace as necessary. (b) Loose fasteners, broken or porous metal parts. (b) Tighten fasteners, Repair or replace metal parts. 2. Crankshaft rear Oil seal. 2. Replace rear crankshaft Oil seal (Refer to Engine/ Engine Block,' Seal, Crankshaft Oil, Rear/ Removal) 3. Crankshaft seal flange. Scratched, nicked or grooved. 3. Polish or replace crankshaft. 4. Oil pan flange cracked. 4. Replace Oil pan (Refer to Engine/ Lubrication/ Pan, Oil Removal) 5. Damaged or misaligned crank- shaft front oil seal. 5. Replace crankshaft front oil seal (Refer to Engine/ Engine Block/ Seal, Crankshaft Oil, Front/ Removal) 6. Scratched or damaged vibration damper hub. 6. Polish or replace vibration damper. OIL PRESSURE DROP 1. Low oil level 1. Check and correct oil level. 2. Faulty Oil pressure sensor. 2. Replace Oil pressure sensor (Refer to Engine/ lubrication/ Sensor, Oil Pressure - Removal) 3. Low oil pressure. 3. (a) Check main bearing clearance (Refer to Engine/Engine block - Standard Procedure) . (b) Check rod bearing clearance (Refer to Engine/Engine Block/ Bearings, Connecting Rod - Standard Procedure) 4. Clogged oil filter. 4. Replace oil filter (Refer to Engine/Lubrication/ Filter, Engine Oil - Removal) 5. Worn Oil pump. 5. Replace Oil pump (Refer to Engine/ Lubrication/ Pump, Engine Oil - Removal) 6. Thin or diluted oil. 6. Change oil and filter (Refer to Engine/Lubrication/ Oil Standard Procedure) 7. Excessive bearing clearance. 7. (a) Replace crankshaft bearings (Refer to Engine/ Engine Block/ Bearings, Crankshaft - Standard Procedure) . (b) Replace rod bearings (Refer to Engine/Engine Block/Bearing, Connecting Rod - Standard Procedure). 8. Oil pump relief valve stuck - 9. Oil pump pick-up loose, damaged or clogged 9. Replace oil pump pick-up (Refer to Engine/ Lubrication/, Oil pump - Removal).
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