Excessive Engine Temperature; Insufficient Engine Temperature; Low Engine Oil Pressure - Mercury Ski User Manual

CC522

Excessive Engine Temperature

Possible Cause
Water Inlet valve closed (if so equipped).
Drive belt loose or in poor condition.
Seawater pickups obstructed.
Faulty thermostat.
Coolant level low in fresh water section. (If
Equipped)
Heat Exchanger Cores plugged with foreign material
(If Equipped).
Loss of pressure in fresh water section (If
Equipped).
Kinked, collapsed, or broken hose.
Transmission fluid cooler and/or engine oil cooler
plugged with foreign material
CA448

Insufficient Engine Temperature

Possible Cause
Faulty Thermostat
CA449

Low Engine Oil Pressure

Possible Cause
Insufficient oil in crank case.
Excessive oil in crankcase (causing it to become
aerated).
Diluted or improper viscosity oil.
Remedy
Open valve Completely
Replace or adjust belt.
Remove obstruction.
Replace.
Check for cause of low coolant level and repair. Fill
system with proper coolant solution.
Clean Heat Exchanger.
Check for leaks. Clean, inspect, and test pressure
Straighten or replace hose.
Disconnect hoses from coolers and flush out with a
water hose in direction opposite normal water flow.
Remedy
Replace
Remedy
Check and add oil.
Check and remove required amount of oil. Check
for cause of excessive oil (improper filling, bad fuel
pump, etc.).
Change oil and oil filter, using correct grade and
viscosity oil. Determine cause for dilution
(excessive idling, faulty fuel pump, etc.).
cap.
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