TROUBLESHOOTING
11-2
ENGINE
Problem Cause Solution
Engine Not Developing Full
Power
Air filters plugged Replace filter elements.
Fuel line restricted Repair or replace fuel line.
Contaminated fuel Drain fuel tank and clean outlet screen.
Refill.
Fuel filters plugged Change filters.
Plugged vent in fuel tank cap Clean or install new cap.
Injection nozzles dirty or
malfunctioning
See your authorized dealer.
Injection pump linkage adjustment See your authorized dealer.
Wrong fuel Use correct fuel.
Wrong oil Use correct oil.
Turbocharger failure See your authorized dealer.
Injection pump out of timing See your authorized dealer.
Exhaust restriction Remove muffler and run engine.
Engine is too hot or cold See below.
Engine failure See your authorized dealer.
Valve clearance Check and adjust valves.
Intake or exhaust system leakage See your authorized dealer.
Engine Overheats Low coolant level Add coolant.
Thermostat See your authorized dealer.
Engine overloaded Check hydraulic relief valves.
Radiator cap faulty Install new cap.
Radiator core or oil cooler core
plugged
Clean radiator and oil cooler.
Radiator screen plugged Clean screen.
Injection pump out of timing See your authorized dealer.
Fan damaged Replace fan.
Air cleaner plugged Clean air cleaner.
Alternator and fan belt loose Tighten or install new belt.
Pulley grooves worn Replace pulleys.
Cooling system passages dirty Flush cooling system.
Temperature gauge or sending unit See your authorized dealer.
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