Minimise the friction
Increase the friction
Increase the wearness
Increase the noise
Lubrication system
Cooling system
Fuel system
Air conditioning system
Worn out bearing
Worn out shaft
Worn out seal
Worn out impeller
Water leakage
Bearing noisy
Low water pressure
Fan belt loose
Free coolant flow
Slow coolant flow
Stop coolant flow
Increase coolant flow