Engine Rpm Will Not Reach Rated Speed - Dodge D250 1990 Service Manual

Troubleshooting Logic
Page9A-14
Base Engine Components
DODGE Turbo Diesel
Engine RPM Will Not Reach Rated Speed
Cause
Correction
Engine Overloaded
Verify High Idle Speed Without Load.
Investigate Operation to be Sure
Correct Gear is Being Used.
Verify High Idle Speed Without Load.
Investigate Operation to be Sure
Correct Gear is Being Used.
OK
•
Malfunctioning Tachometer
Verify Engine Speed with Hand
Tachometer - Correct as Required
OK
Throttle Linkage Worn or Incorrectly
Adjust Linkage for Stop-to-Stop Fuel
Adjusted
Control Lever Travel.
OK
t
Partially Engaged Mechanical
Check/Place Shutdown Lever in Run
Shutdown Lever
Position.
OK
*
Inadequate Fuel Supply
Check the Fuel Flow Through the
System to Locate the Reason for
Inadequate Fuel Supply.
Check the Fuel Flow Through the
System to Locate the Reason for
Inadequate Fuel Supply.
OK
Malfunctioning Injection Pump
Replace Pump.