Marinediesel 5L V8, Owner'S Manual, Page: 168 / 248

166
LUBE OIL CONTAMINATED
PROBLEM CORRECTION/FURTHER DIAGNOSIS
ƒ
Air/dirt ingestion at oil leakage areas
ƒ
Leaking crankcase ventilation system
(pipes/hoses)
ƒ
Inspect sealing surfaces and areas for signs
of oil leakage
ƒ
Inspect system for oil leakage; repair or
replace damaged parts, if needed
COOLANT CONTAMINATED
PROBLEM CORRECTION/FURTHER DIAGNOSIS
ƒ
Incorrect coolant change interval
ƒ
Lube passage leak into coolant passage
ƒ
Oil cooler leak into radiator coolant
ƒ
Review correct engine maintenance.
ƒ
Consult your dealer service manager.
ƒ
Consult your dealer service manager.
HIGH COOLANT TEMPERATURE
PROBLEM CORRECTION/FURTHER DIAGNOSIS
ƒ
Operation while oveloaded or at excessive
rpm
ƒ
Operation during extreme ambient
temperature (hot/cold)
ƒ
Incorrect coolant quality/grade
ƒ
Incorrect coolant level
ƒ
Faulty radiator pressure cap
ƒ
Faulty circulation pump
ƒ
Leaking coolant tank/hose
ƒ
Restricted coolant flow in hoses.
ƒ
Restricted coolant flow in cylinder case and
cylinder head passages
ƒ
Inaccurate coolant temperature gauge
operation
ƒ
Insure boat is properly loaded and operated
within RPM limits.
ƒ
Review normal operating procedures.
ƒ
Drain cooling system and refill with proper
coolant
ƒ
Fill to coolant tank neck.
ƒ
Replace with 14-psi pressure cap only.
ƒ
Consult your dealer service manager.
ƒ
Check tank and hose for leakage and repair,
if needed.
ƒ
Check cooling system for overheating.
ƒ
Consult your dealer service manager.
ƒ
Check gauge circuit operation.
NOTE: Items underlined are the most likely cause of the condition.