12-3
The engine continues to run (diesels) after being shut down
The engine exhaust is black
The engine overheats
The engine oil pressure is low
Fuel consumption is excessive
Engine oil consumption is excessive
Possible cause Remedy Ref. page
The fuel injection system is malfunctioning. Bring the vehicle to an authorized Sterling
service facility.
–
The ignition switch is malfunctioning. Bring the vehicle to an authorized Sterling
service facility.
–
Possible cause Remedy Ref. page
The fuel injection system is malfunctioning. Bring the vehicle to an authorized Sterling
service facility.
–
The air cleaner is clogged. Clean or replace the air cleaner element. 11-31
Possible cause Remedy Ref. page
The radiator is damaged or dirty. Clean the radiator with a soft brush. 11-37
The coolant level is too low. Add coolant. 11-36
The radiator pressure cap is not tight. Install the pressure cap firmly. 11-36
The fan belt is loose. Adjust the belt tension. 11-39
The coolant is contaminated. Flush the cooling system and change the
coolant.
11-33
Possible cause Remedy Ref. page
The engine oil level is too low. Add engine oil. 11-19
Engine oil viscosity is too low. Replace the oil. Use oil of the correct viscos-
ity.
11-19
Engine components are worn. Bring the vehicle to an authorized Sterling
service facility.
–
Possible cause Remedy Ref. page
There is a fuel leak. Check the fuel system and retighten connec-
tions as necessary.
11-29
The air cleaner is clogged. Clean or replace the air cleaner element. 11-31
Tire pressure is too low. Add air to the tires. 11-45
The clutch disc is worn. Bring the vehicle to an authorized Sterling
service facility.
–
Possible cause Remedy Ref. page
The wrong oil is being used. Replace the engine oil with the correct type. 11-19
There is an oil leak. Check the oil circuit and retighten connec-
tions as necessary.
11-28
The engine oil needs replacement. Change the engine oil at prescribed intervals. 11-17
The oil filter is clogged. Replace the oil filter element. 11-28
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