5
. Fuel Injection System
5-15
Fuel Lines
System description:
1. After key-on, all sensors’ signals sent to the ECU first. The electrical fuel pump will be
activated by ECU signal. If the engine did not start for 2~3 seconds, then the fuel pump will
be turned off to save electricity. The pressure regulator maintains the fuel pressure around
2.5 Bar, and the fuel injector spray proper fuel quantity according to the conditions and
environmental coefficient. When key-off or engine stopped, the fuel pumps stop operating.
2. The fuel filter is to filter alien materials so it has to be replaced regularly.
3. Do not let the starting motor keep running when the engine cannot start. It will cause battery
voltage to decrease. If the voltage drops under 8V, the pump will not operate. The
countermeasure will be starting the engine by connecting a new battery or with kick-starter.
Battery
ECU
Fuel filter
Injector
Fuel
tank
Vacuum
pipe
Fuel
Regulator
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