Fuel Supply System - VESPA GTV 250 i.e. 2008 Service Station Manual

Injection
Possible Cause
Power to spark plug
Intake system
Parameter reliability
Fuel system
Engine knocking
PRESENCE OF KNOCKING (COMBUSTION SHOCKS)
Possible Cause
Faults detected by self-diagnosis
Ignition efficiency
Parameter reliability
Intake system sealing
TPS reset successful
Fuel system
Selection of the cylinder base gasket thickness

Fuel supply system

The fuel supply circuit includes the electric pump, the filter, the pressure regulator. the electro-injector
and the delivery and return pipes.
The electrical pump is located in the tank from which the fuel is pumped and sent to the injector through
the filter.
The pressure is controlled by the pressure regulator situated in the pump assembly in the tank.
INJEC - 164
Vespa GTV 250 i.e.
Operation
Air temperature
Coolant temperature
Lambda probe
Spark plug
Shielded cap
H.V. cable
H.V. coil
Air filter
Filter box (sealing)
Intake sleeve (sealing)
Throttle valve position signal
Coolant temperature indicator
Intake air temperature signal
Ignition advance
Fuel level in the tank
Fuel pressure
Fuel filter
Injector flow
Operation
Pump relay
H.V. coil
Injector
Engine speed timing sensor
Air temperature
Coolant temperature
Lambda probe
Spark plug
Throttle valve position signal
Coolant temperature indicator
Intake air temperature signal
Ignition advance
Intake sleeve
Filter housing
TPS reset successful
Fuel pressure
Fuel filter
Injector flow
Fuel quality
Selection of the cylinder base gasket thickness