Page 662 - Foton Workshop Manual - Sauvana

13C-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

1.Fuel pump relay broken Replace fuel pump relay

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

4.Fuel pipe blocked or leaking Clean fuel system or replace defective parts
Engine unable 5.Fuel screen blocked or broken Replace fuel screen
or hard to start 6.High-pressure fuel pump blocked or

broken Overhaul or replace high-pressure fuel pump
7.Glow plug broken Replace glow plug

8.Injector solenoid valve defective Overhaul or replace injector solenoid valve
9.Injector control or circuit defective Troubleshoot with analyzer

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

3.Fuel pipe blocked or leaking Clean fuel system or replace defective parts
Engine idle
rough 4.Injector blocked and doesn't work Overhaul or replace injector
5.Injector control or circuit defective Troubleshoot with analyzer
6.High-pressure fuel pump blocked or Overhaul or replace high-pressure fuel pump
broken

1.Inferior fuel Use quality fuel
2.Low-pressure fuel pipe blocked or
Engine loss of with insufficient pressure Clean fuel system or replace defective parts
power
3.Injector doesn't work Overhaul or replace injector
4.High-pressure fuel pump broken Overhaul or replace high-pressure fuel pump

Black fume from 1.Poor performance of fuel injector Overhaul or replace injector
the engine 2.Injector control defective Troubleshoot with analyzer

Page 662