OMAL171426

Engine

Symptom	Problem	Solution
Engine hard to start or will not start	No fuel	Fill tank with proper fuel.
	Air in fuel system	Bleed air from fuel system
	Low ambient air temperature	Use cold weather starting aids.
	Fuel filter contaminated	Replace filter element.
	Crankcase oil too heavy	Use correct viscosity oil
	Faulty glow plugs	See your dealer.

Engine knocks	Insufficient oil in engine	Add more oil.
	Fuel injection pump incorrectly timed	See your dealer.

Engine overheats	Low coolant level	Fill radiator to proper level. Check cooling system for leaks.
	Loose or defective fan belt	Check belt and replace, if necessary.
	Cooling system needs flushing	Drain, flush and refill cooling system.
	Dirty oil cooler or grille screens	Clean oil cooler and screens.
	Defective thermostat	Remove and check thermostat.

Engine oil pressure too low

Low engine oil level

Add more engine oil.

High oil consumption	Oil of too low viscosity	Drain and refill with oil of correct viscosity.
	Leakage	Check for leaks in lines and around gaskets.

Excessive fuel consumption	Unsuitable fuel grade	Use a suitable fuel grade.
	Incorrect valve clearance	See your dealer.
	Fuel injection nozzles dirty or damaged	See your dealer.
	Engine incorrectly timed	See your dealer.
	Clogged or dirty air cleaner	Clean air cleaner.

Engine emits black or grey exhaust smoke	Unsuitable fuel grade	Use a suitable fuel grade.
	Clogged air cleaner	Clean air cleaner.
	Defective muffler	Replace muffler.
	Fuel injection nozzles dirty or damaged	See your dealer.

Engine emits white smoke	Unsuitable fuel grade	Use a suitable fuel grade.
	Cold engine	Run engine until normal operating temperature is reached.
	Defective thermostat	Replace thermostat.
	Engine incorrectly timed	See your dealer.
	Faulty glow plugs	See your dealer.

OU12401,0001D21-19-20110713