OMT187892

Symptom	Problem	Solution
Starter Motor Turns Engine Too Slowly	Battery undercharged	Check battery charge. Charge or replace battery.
	Loose or dirty battery terminals	Tighten or clean battery terminals.
	Faulty engine ground connection	Repair, clean or tighten the connection.
	Incorrect grade of engine oil	Change oil. (See Change Engine Oil and Replace Filter in Maintenance—Every 250 Hours section.)

Engine Hard Starting when Cold	Engine starter motor turns engine too slowly	Check battery charge. Charge or replace battery.
	Incorrect use of cold start function	Instruct operator on correct use.

Engine Turns, but Does Not Start

Insufficient fuel in fuel tank

Fill fuel tank and bleed fuel system. (See Bleed Fuel System in Miscellaneous—Machine section.)

Engine Difficult to Start (Hot or Cold)	Starter motor turns too slowly	Check the battery charge. Charge or replace battery.
	Air in fuel system	Bleed fuel system. (See Bleed Fuel System in Miscellaneous—Machine section.)
	Restricted air inlet	Service air filter system. (See Service Engine Air Intake System in Maintenance—As Required section.)
	Restricted exhaust system	Locate and repair restriction.

Engine Cuts Out Soon After Starting	Insufficient fuel in fuel tank	Fill fuel tank and bleed fuel system. (See Bleed Fuel System in Miscellaneous—Machine section.)
	Air in fuel system	Bleed fuel system. (See Bleed Fuel System in Miscellaneous—Machine section.)
	Blocked fuel tank air vent	Clean air vent and bleed fuel system. (See Bleed Fuel System in Miscellaneous—Machine section.)
	Blocked fuel filters	Replace fuel filters. (See Replace Primary Fuel Filter (Water Separator) in maintenance—1000 Hours section and Replace Final Fuel Filter in Maintenance—500 Hours section.)
	Air filter restriction	Service air filter system. (See Service Engine Air Intake System in Maintenance—As Required section.)

Engine Overheating	Engine coolant level too low	Fill radiator. (See Check Engine Coolant Level in Maintenance—Every 10 Hours or Daily section.)
	Drive belt slipping	Inspect, adjust or replace drive belt. (See Inspect Serpentine Belt in Miscellaneous—Machine section.)
	Radiator cap not sealing or worn	Replace cap.
	Blocked radiator	Clean radiator. (See Inspect and Clean Cooling Systems in Maintenance—As Required section.)
	Air intake is blocked	Clean as necessary.

Engine Knocking

Incorrect fuel grade

Drain and refill. (See Bleed Fuel System in Miscellaneous—Machine section.)

Loss of Power

Air filter restriction

Service air filter system. (See Service Engine Air Intake System in Maintenance—As Required section.)

Excessive Fuel Consumption	External fuel tank leak	Check fuel tank, fuel lines and filter for leaks and/or damage. See your authorized dealer.
	Low operating temperature	Check and repair cooling system. (See Check Engine Coolant Level in Maintenance—Every 10 Hours or Daily section.)
	Air filter restriction	Service air filter system. (See Service Engine Air Intake System in Maintenance—As Required section.)

Low Engine Oil Pressure

Incorrect grade of oil used

See Fuels and Lubricants section.

Abnormal Oil Consumption	Engine overfilled	Drain to proper level. Check drained oil to ensure there are no other oils in oil.
	Engine oil leaks	Locate and repair oil leaks.
	Incorrect grade of engine oil	See Fuels and Lubricants section.
	Engine oil level too low	Fill to correct level. (See Check Engine Oil Level in Maintenance—Every 10 Hours or Daily section.)

Oil Pressure Too High

Incorrect engine oil used

Drain engine sump. (See Change Engine Oil and Replace Filter in Maintenance—Every 250 Hours section.)

Engine Oil Sludge	Incorrect grade of oil used	Drain engine sump. (See Change Engine Oil and Replace Filter in Maintenance—Every 250 Hours section.)
	Engine operating temperature too high or too low	Check and correct cooling system.
	Oil in service for too long	Change oil and oil filters. (See Change Engine Oil and Replace Filter in Maintenance—Every 250 Hours section.)

Excessive Vibration at Any Speed	Loose components (e.g., alternator, etc.)	Tighten all components including engine mounts and exhaust system.
	Worn or damaged engine mountings	Check and replace engine mounting.

Black Smoke from Exhaust	Air inlet system restricted	Service and repair inlet system. (See Service Engine Air Intake System in Maintenance—As Required section.)
	Incorrect grade of fuel	Drain and fill fuel tank. (See Bleed Fuel System in Miscellaneous—Machine section.)

Blue Smoke from Exhaust

Engine oil level too high

Drain to correct level.

White Smoke from Exhaust	Engine running too cold	Check cooling system.
	Water in fuel supply	Clean fuel system. (See Bleed Fuel System in Miscellaneous—Machine section.)

OUO1043,0000E2B-19-20011030