Page 1300 - Foton Workshop Manual - Tunland (AT)

12-2 FUEL - FUEL SYSTEM

DEFECTS

12 Defect Possible Cause Recommended Solution
Fuel pump relay broken Replace fuel pump relay

No fuel or inferior fuel in fuel
Use quality fuel
tank
Air in fuel system Discharge air

Clean fuel system or replace
Fuel pipe blocked or leaking
defective parts
Fuel screen blocked or
Replace fuel screen
Engine unable or hard to start broken
High-pressure fuel pump Overhaul or replace
blocked or broken high-pressure fuel pump

Glow plug broken Replace glow plug
Injector solenoid valve Overhaul or replace injector
defective solenoid valve

Injector control or circuit
Troubleshoot with analyzer
defective
No fuel or inferior fuel in fuel
Use quality fuel
tank

Air in fuel system Discharge air
Clean fuel system or replace
Fuel pipe blocked or leaking
defective parts
Engine idle rough Injector blocked and doesn't
Overhaul or replace injector
work

Injector control or circuit
Troubleshoot with analyzer
defective
High-pressure fuel pump Overhaul or replace
blocked or broken high-pressure fuel pump

Inferior fuel Use quality fuel
Low-pressure fuel pipe
Clean fuel system or replace
blocked or with insufficient
defective parts
Engine loss of power pressure
Injector doesn't work Overhaul or replace injector

High-pressure fuel pump Overhaul or replace
broken high-pressure fuel pump
Poor performance of fuel
Overhaul or replace injector
Black fume from the engine injector

Injector control defective Troubleshoot with analyzer

Page 1300