Fuel System Working Components - Chery automobile Service Manual

10. Electric power balance:
Normal working of electric components (front light, heat back window, etc.) will make
battery voltage lower than 12.2V, electric components power demanded in that time is larger
than electric power from generator. That is to say, negative "electric power balance" may
cause damage to battery. In that condition, ECU accelerates idle speed step by step (from 800
r/m to 1200 r/m) to make adequate electric power from generator. Accelerating idle will
disappear when "electric power balance" is positive.
Fuel supply system of this vehicle is belonging to "half no scavenge fuel", there is only one
tube connecting fuel tank and fuel rail.
This system has advantages below:
- When accident occurs, no scavenge fuel tube can lower fire possibility to minimum.
-There is comparative less fuel vapor in fuel tank.
- Fuel temperature in fuel tank is lower.

FUEL SYSTEM WORKING COMPONENTS

Fuel Injection Volume Inspection
Warning
·Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious
injuries or death and damage. Always carry out the following procedure with the
engine stopped.
Note
·If there is an after market fuel injector tester, perform the following test.
·If there is no an after market fuel injector tester, perform
Resistance Inspection , and
ok or not.
1 Complete the
2 Disconnect the negative battery cable.
3 Remove the fuel injectors.
4 Connect the fuel injector to the fuel injector tester.
5 Measure the injection volume of each fuel injector using a graduated container.
Before repair procedure
FUEL Leakage Test to verify the fuel injector is
F-21
Operation Test ,