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Engine Cranks Slowly
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Complete electrical system failure
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See Diagnose Electrical System - Complete Electrical System Failure
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Batteries discharged
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See Diagnose Electrical System - Batteries Not Charging
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Starter failure
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See Diagnose Electrical System - Starter Motor Inoperative
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Hard (or No) Start with Exhaust Smoke
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Cold weather
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Use cold weather starting aid, if installed.
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Improper starting procedure
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Review Starting Procedure. See Section 2-2.
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Air in Fuel System
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Bleed fuel system. See Section 4-1 for procedure.
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Restricted fuel flow
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Drain or replace fuel/water separator element.
Replace fuel filter elements.
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Contaminated fuel system
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Drain and refill fuel tank.
Bleed fuel system.
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Restricted air intake system
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Clean or replace engine air intake filter elements.
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| Symptom |
Problem |
Solution |
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Hard (or No) Start Without Exhaust Smoke
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Insufficient fuel
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Fill fuel tank.
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Improper Starting procedure
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Review Starting Procedure. See Section 2-2.
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Air in fuel system
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Bleed fuel system. See Section 4-1 for procedure.
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Restricted fuel flow
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Drain or replace fuel/water separator element.
Replace fuel filter elements.
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Restricted air intake system
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Clean or replace engine air intake filter elements.
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Engine Starts but Stalls
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Idle speed to low
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Adjust idle speed.
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Bad engine shutdown unit
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Contact authorized dealer for service.
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Air in fuel system
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Bleed fuel system. See Section 4-1 for procedure.
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Restricted fuel flow
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Drain or replace fuel/water separator element.
Replace fuel filter elements.
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Contaminated fuel system
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Drain and refill fuel tank.
Bleed fuel system.
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Incorrect fuel for conditions
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Drain and refill fuel tank. See Section 3-1 for recommended diesel fuel.
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Engine overload
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Reduce load.
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Restricted air intake system
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Clean or replace engine air intake filter elements.
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Improper warm-up
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Review Warm-up Procedure. See Section 2-2.
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| Symptom |
Problem |
Solution |
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Overheating
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Low coolant level
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Check coolant level. Add coolant, if necessary.
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Low oil pressure
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See Diagnose Engine - Low Oil Pressure
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Bad radiator cap
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Replace radiator cap.
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Fan or belt damaged
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Repair or replace fan or belt.
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Belt tensioner not working
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Repair or replace tensioner.
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Incorrect fuel
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Drain tank and refill. See Section 3-1 for recommended diesel fuel.
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Radiator/oil cooler blocked by debris
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Clean radiator/oil cooler.
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Faulty water pump
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Replace water pump. Contact authorized dealer for service.
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Low Oil Pressure
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Incorrect oil level
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Check oil level. Add or drain oil as required.
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Incorrect oil for conditions
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Change oil. See Section 3-1 for recommended engine oil.
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Clogged oil filter
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Change engine oil and filter.
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Contaminated oil
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Contact authorized dealer for service.
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Excessive oil pressure
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Incorrect oil viscosity
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Change engine oil and filter. See Section 3-1 for recommended engine oil.
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