PCM DI Catanium CES, Owner'S Operation And Maintenance Manual

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53
L510010D-17
TROUBLESHOOTING - 14
Malfunction Possible Cause Corrective Action
Engine Overheats Loose or worn drive belt(s) Adjust or replace the belts as
necessary.
Collapsed, kinked or leaking Replace the hoses.
hoses.
Transmission/engine oil cooler Remove the water hoses and flush
plugged in opposite direction of the normal
flow.
Faulty thermostat Replace the thermostat.
Sea-water intake valve Open the valve completely.
partially/fully closed.
Restricted sea-water pickup Remove restriction.
Faulty temperature sending unit Test and replace as necessary.
or gauge
Sea-water pump impeller worn or Replace the impeller.
damaged
The following applies to engines
Coolant level low in the fresh-water Check the cooling system for leaks.
equipped with Fresh-Water
section of the cooling system Refill the system. See Warning
Cooling (FWC) systems.
before removing the fill cap.
Heat exchanger passages plugged Clean and flush the exchanger.
with scales and debris
Improper coolant mixture Install the proper coolant mixture
(50% antifreeze - 50% water).
Insufficient engine temperature Faulty thermostat Replace the thermostat.
Faulty temperature sender Replace the temperature sender.
Engine oil pressure low Faulty oil pressure sending unit Test and replace as necessary.
or gauge
Oil level low Add specified oil. Check the engine
for leaks.
Crankcase overfilled causing oil Remove the required amount of oil.
aeration Determine the cause of overfilled
condition (improper filling, etc.).
Diluted or improper grade/ Change the oil and filter.
viscosity of oil Determine the cause of dilution.
(insufficient engine temperature,
excessive idling, etc.)