| OIL LEAKS |
1. Misaligned or damaged gaskets and O-Rings. |
1. Replace as necessary. |
| 2. Loose fasteners, broken or porous metal parts. |
2. Tighten fasteners, Repair or replace metal parts. |
| 3. Crankshaft rear oil seal. |
3. Replace as necessary. |
| 4. Crankshaft seal flange. Scratched, nicked or grooved. |
4. Polish or replace crankshaft. |
| 5. Oil pan flange cracked. |
5. Replace the oil pan. |
| 6. Front crankshaft oil seal, damaged or misaligned. |
6. Replace the front crankshaft oil seal. |
| 7. Scratched or damaged vibration damper hub. |
7. Polish or replace the vibration damper. |
| |
8. Crankshaft Rear Flange Microporosity. |
8. Replace the crankshaft. |
| OIL PRESSURE DROP |
1. Low oil level. |
1. Check and correct oil level. |
| 2. Faulty oil pressure switch. |
2. Replace the oil pressure switch. |
| 3. Low oil pressure. |
3. Check the oil pump and bearing clearance. |
| 4. Clogged oil filter. |
4. Replace the oil filter. |
| 5. Worn oil pump. |
5. Replace the oil pump. |
| 6. Thin or diluted oil. |
6. Change the oil and filter. |
| 7. Excessive bearing clearance. |
7. Replace bearings as necessary. |
| 8. Oil pump relief valve stuck. |
8. Replace the oil pump. |
| 9. Oil pickup tube/seal loose or damaged. |
9. Replace the oil pickup tube. |
| OIL PUMPING AT RINGS; SPARK PLUGS FOULING |
1. Worn or damaged rings. |
1. Hone the cylinder bores and replace rings. |
| 2. Carbon in oil ring slots. |
2. Replace the rings. |
| 3. Incorrect ring size installed. |
3. Replace the rings. |
| 4. Worn valve guides. |
4. Ream the guides and replace valves. |
| 5. Leaking valve guide seals. |
5. Replace the valve guide seals. |