Diesel Troubleshooting Chart

By unknown | Published: 24 Oct 2010

Complaint ————-> Probable Cause	Will Not Start	Hard To Start	Starts And Stalls	Dies On Deceleration	Runs Rough	Lack Of Power	Black Smoke	White Smoke
Low Cranking Speed	X	X
Incorrect Starting Procedure	X	X
Some or All Glow Plugs Bad	X	X			X			X
No Fuel to Cylinders	X
Plugged or Restricted Return	X	X	X		X	X		X
Insufficient Fuel Supply	X	X	X		X			X
No Voltage to Shutoff Solenoid	X
Shutoff Solenoid Bad	X	X	X
Poor Fuel Quality	X	X	X		X	X
Some or All Injectors Bad	X	X			X		X	X
Incorrect Pump to Engine Timing	X	X				X		X
Low Compression	X	X						X
Bad Injection Pump	X	X	X		X			X
Idle Speed Too Low			X	X	X
Fast Idle Solenoid Bad			X
Air In Fuel			X		X
Governor Binding				X
Metering Valve Sticking In Injection Pump				X
Fuel Leaks at Injection Lines					X
Air Inlet Restricted						X	X
Transmission Shift Points Incorrect						X
Brake Drag						X
Incorrect Engine Timing	X	X					X	X
Internal Engine Problems	X	X				X	X