70
ENGINE TROUBLESHOOTING
12/150_23136625
−
C en
Symptom
Problem
Solution
Below normal Engine temperature
Defective thermostat.
Remove and check thermostat.
Defective temperature gauge or sender.
Check gauge, sender, and connections.
Lack of power
Engine overloaded.
Reduce load.
Intake air restriction.
Service air cleaner.
Clogged fuel filter.
Replace filter elements.
Improper type of fuel.
Use proper fuel.
Overheated engine.
See “Engine Overheats”.
Below normal engine temperature.
Remove and check thermostat.
Improper valve clearance.
See your authorized servicing dealer.
Dirty or faulty injection nozzles.
Have authorized servicing dealer check injectors.
Injection pump out of time.
See your authorized servicing dealer.
Electronic fuel system problem
See your authorized servicing dealer.
Turbocharger not functioning. (Turbocharger
engines only)
See your authorized servicing dealer.
Leaking exhaust manifold gasket.
See your authorized servicing dealer.
Defective aneroid control line.
See your authorized servicing dealer.
Restricted fuel hose.
Clean or replace fuel hose.
Low fast idle speed.
See your authorized servicing dealer.
Low oil pressure
Low oil level.
Add oil.
Improper type of oil.
Drain, fill crankcase with oil of proper Viscosity and
quality.
High oil consumption
Crankcase oil too light.
Use proper viscosity oil.
Oil leaks.
Check for leaks in lines, gaskets, and drain plug.
Restricted crankcase vent tube.
Clean vent tube.
Defective turbocharger.
See your authorized servicing dealer.
Engine emits white smoke
Improper type of fuel.
Use proper fuel.
Low engine temperature.
Warm up engine to normal operating temperature.
Defective thermostat.
Remove and check thermostat.
Defective injection nozzles.
See your authorized servicing dealer.
