OMAL219620

Engine

Symptom	Problem	Solution
Engine hard to start or will not start	No fuel in the tank	Fill tank.
	Air in fuel system	Bleed air from fuel system
	Fuel pump does not work	Turn key switch on and listen for pumping noise to make sure fuel pump is working
	Weather too cold	Use cold-weather starting aid
	Fuel filter contaminated	Replace filter(s)
	Engine oil too viscous	Use correct viscosity oil
	Faulty glow plugs	Have them checked by your dealer.

Engine knocks

Insufficient oil in engine

Add oil.

Engine overheating	Insufficient coolant level	Fill radiator to prescribed level. Check cooling system for leaks.
	Loose or defective fan belt	Inspect and replace belt if needed.
	Viscous fan is dirty	Clean the bimetallic spring with compressed air.
	Viscous fan defective	Have the viscous fan checked by an authorized dealer.
	Cooling system needs flushing	Drain, flush and refill cooling system.
	Oil cooler or protective grille contaminated	Clean oil cooler and grille.
	Defective thermostat	Remove and check thermostat

Low engine oil pressure

Engine oil level too low

Add oil.

Excessive oil consumption	Oil of too low viscosity	Drain and top up with oil of correct viscosity.
	Leaking	Check oil lines and gaskets.

High fuel consumption	Unsuitable fuel	Use proper fuel.
	Incorrect valve clearance	Have them checked by your dealer.
	Injectors dirty or damaged	Have them checked by your dealer.
	Injection time incorrectly set	Have them checked by your dealer.
	Clogged or dirty air cleaner	Clean the air cleaner

Engine emits black or gray exhaust smoke	Unsuitable fuel	Use proper fuel.
	Clogged air cleaner	Clean the air cleaner
	Injectors dirty or damaged	Have them checked by your dealer.

Engine emits white smoke	Unsuitable fuel	Use proper fuel.
	Engine too cold	Run engine until normal operating temperature is reached.
	Defective thermostat	Replace thermostat.
	Injection time incorrectly set	Have them checked by your dealer.
	Faulty glow plugs	Have them checked by your dealer.

OU12401,0001D21-19-20160714