Onan DJA Series User Manual

ENGINE TROUBLESHOOTING
OPERATOR'S
TROUBLE-SHOOTING GUIDE ?j
for g
ONAN DIESEL ENGINES '~
(Air Cooled)
CAUSE
[
Hard Starting or
Failure
to
Start
1
Starter Motor
Doesn't
Turn
|
Engine
Misfi res |
Speed
Too
High
Speed
Too Low 1
Hunting
Condition 1
No
Governor Control 1
Poor Sensitivity 1
Excessive
Oil Consumption 1
Excessive
Fuel
Consumption |
Low Oi
1
Pressure |
High
Oil Pressure
Diluted
Oil
Engine Overheats
Mechanical Knocks |
COOLING
SYSTEM
Blown Head Gasket
•
COOLING
SYSTEM
Overheating
• • • •
COOLING
SYSTEM
Dirt on Cooling Fi ns
•
COOLING
SYSTEM
Inadequate Air Circulation (Ventilation)
•
FUEL
SYSTEM
Out of Fuel or Shut-off Valve Closed
e
FUEL
SYSTEM
Poor Quality Fuel
• • • e
FUEL
SYSTEM
Dirty Fuel Filters
• • •
FUEL
SYSTEM
Fuel Line Leaks
• • • •
FUEL
SYSTEM
Air in Fuel System
0
• •
FUEL
SYSTEM
Fuel Transfer Pump Diaphragm Leaks
• •
FUEL
SYSTEM
Incorrect Timing
• • • • •
FUEL
SYSTEM
Run for Long Periods of Time at No Load
e
FUEL
SYSTEM
Restricted Air Intake, Dirty Air Filter
• e •
GOVERNOR
SYSTEM
Linkage Loose or Disconnected
Linkage Binding
• •
• •
GOVERNOR
SYSTEM
Excessive Wear in Linkage
• •
GOVERNOR
SYSTEM
Incorrect Governor Adjustment
GOVERNOR
SYSTEM
Spring Sensitivity Too Great
• •
LUBRICATION
SYSTEM
Low Oil Supply
• • •
LUBRICATION
SYSTEM
Defective Gauge
•
LUBRICATION
SYSTEM
Excess Oil in Crankcase
•
LUBRICATION
SYSTEM
Oil Leaks From Engine Base or Connections
•
LUBRICATION
SYSTEM
Crankcase Oil Too Light or Diluted
• • • •
LUBRICATION
SYSTEM
Crankcase Oil Too Heavy
• •
STARTING
SYSTEM
Battery Discharged or Defective
• •
STARTING
SYSTEM
Defective Glow Plug or Lead
• •
STARTING
SYSTEM
Load Connected When Starting
•
STARTING
SYSTEM
Open.Solenoid
• •
STARTING
SYSTEM
Defective Starter
• •

Onan DJA Series Specifications

General

Brand	Onan
Model	DJA Series
Category	Engine
Language	English