Fuel Injector - Sym GTS 250 Service Manual

After measuring the fuel pressure, we MUST check the following joints to see if any leakage
found. For example, the injector or the fuel pump joints shown in figure 19. This must be done
to ensure safety.
Figure 19 Possible leaking points after Fuel pressure measurement
4). Malfunction determination:
a). Fuel pimp working voltage= over 10V
Liquid-level working voltage= over 5V
b). Liquid-level gauge electrical resistance value =
c). Fuel pump normal pressure =
5). Abnormal phenomenon and treatment:
a). Pump coil damaged or bad contact in coupler.
b). Congested filter.
c). Pump abnormal, replace with a new pump.
d). Liquid-level gauge abnormal, replace with a new component.

9. Fuel Injector:

1). Picture illustration:
2). Power source:
Power source → Battery
7~95±5Ω
294 ± 6 Kpa
20