Page 642 - Foton Workshop Manual - Sauvana

13A-2 FUEL - FUEL SYSTEM

TABLE OF MALFUNCTION SYMPTOMS

The table below can help you to rapidly find out the required malfunction information.

Malfunction Possible Cause Reference
Symptoms

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
Fuel pipe blocked or leaking Clean fuel system or replace defective parts

Engine unable Fuel screen blocked or broken Replace fuel screen
or hard to start High-pressure fuel pump

blocked or broken Overhaul or replace high-pressure fuel pump
Glow plug broken Replace glow plug
Injector solenoid valve defective Overhaul or replace injector 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
Fuel pipe blocked or leaking Clean fuel system or replace defective parts

Engine idle Injector blocked and doesn't
rough work Overhaul or replace injector

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

Low-pressure fuel pipe blocked
Engine loss of or with insufficient pressure Clean fuel system or replace defective parts
power
Injector doesn't work Overhaul or replace injector
High-pressure fuel pump broken Overhaul or replace high-pressure fuel pump

Black fume from Poor performance of fuel injector Overhaul or replace injector
the engine Injector control defective Troubleshoot with analyzer

Page 642