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