160 50940193/DP0415
Engine turns over
but will not start
Engine cranking speed too
slow.
Check battery and charge/replace as
necessary—tighten battery terminals.
In cold temperatures, pre-warm the engine.
Fuel tank empty. Fill tank and vent fuel system if necessary.
Fuel filter plugged or restricted. Change fuel filter.
Fuel paraffin separation in
winter.
Use winter grade diesel fuel.
Fuel line leak.
Tighten all threaded connections and clamps;
replace fuel line as necessary.
Fuel shut-off solenoid not
energizing. (interim Tier 4
engines only)
Check electrical connections/voltage to shut-off
solenoid.
Fuel filter restricted/fuel hose
restriction.
Replace filter/check for pinched fuel hose.
Fuel pump malfunction. Contact dealer.
Water in fuel filter. Purge water from filter.
Fuel valve on water separator
in the OFF position.
Turn the valve to the ON position.
Engine fault code(s) displayed. Identify problem and correct.
Engine too cold/ambient
temperature too low.
Pre-heating module malfunction; check
connection and voltage and charge/replace as
necessary. Install block heater.
Engine overheating
Crankcase oil level incorrect.
Adjust oil level—see “Fluid Capacities/
Lubricants” on page 183 for proper oil grade.
Cooling air circulation
restricted.
With engine off, remove restriction.
Fan shroud improperly
positioned.
With engine off, reposition shroud/contact
dealer.
Improper oil grade or oil
excessively dirty.
Change engine oil—see “Fluid Capacities/
Lubricants” on page 183 for proper oil grade.
Exhaust restricted. Allow exhaust to cool; remove restriction.
Air filter restricted. Replace filter(s).
Low coolant level.
Top off coolant. See “Fluid Capacities/
Lubricants” on page 183 for proper coolant
mixture.
Loose fan belt. Tighten fan belt.
Dirty/restricted radiator. Clean radiator.
Thermostat malfunction. Replace thermostat.
Table 23: Engine Troubleshooting
Problem Possible Cause Corrective Action
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