Abnormal Engine Operation - Detroit Diesel DD15 EuroIV Operator's Manual

Troubleshooting
Table 11.
Probable Causes
Low Battery Voltage
Loose cranking motor
connections
Faulty cranking motor
Faulty cranking motor switch
Internal seizure
Improper lubricating oil
Circuit breaker/electronic control
malfunction
Fuse blown or missing
Air in fuel
Out of fuel
Loose fuel connections
Cracked fuel lines
Obstructed fuel filters/lines
Faulty fuel pumps
Faulty injector operation
Restricted fuel fitting missing
DDEC Malfunction
Installation/operation of fuel
check valve or shutoff valve
Worn intake and exhaust valves
Worn piston rings/liners
Leaking cylinder head gasket
Improper intake or exhaust valve
adjustments

Abnormal Engine Operation

This section explains Abnormal Engine Operation Symptoms and Probable Causes
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Hard Starting Symptoms and Probable Causes
Engine Will Not
Rotate
Insufficient Fuel Supply
Low Compression
Low Cranking
Speed
X X
X —
X X
X X
X —
— X
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All information subject to change without notice.
Engine Cranks
But Will Not
Start
—
—
—
X
—
—
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X