Vespa LX 2012 User Manual

Possible Cause Operation
Throttle body - manifold
Air cleaner joint
Filter box
Fuel system (low pressure) Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Exhaust system sealing (infiltrations) Manifold - head
Manifold - silencer
silencer welding
Engine revs irregularly
ENGINE IRREGULAR PERFORMANCE WITH VALVE SLIGHTLY OPEN
Possible Cause Operation
Intake system cleaning Air filter
Diffuser and throttle valve
Stepper
Intake system sealing Air cleaner joint
Filter box
Ignition system Spark plug wear check
Parameter reliability Throttle valve position signal
Engine temperature signal
Intake air temperature indicator
Ignition advance
TPS reset successful TPS reset successful
Presence of faults detected by the self diagnosis Pump relay
HV coil
Injector
Revolution timing sensor
Air temperature
Engine temperature
Lambda sensor
Poor performance at full throttle
POOR ENGINE PERFORMANCE AT FULL POWER/ ENGINE IRREGULAR PERFORM-
ANCE ON PICKUP
Possible Cause
Operation
Presence of faults detected by the self diagnosis Pump relay
HV coil
Injector
Revolution timing sensor
Air temperature
Engine temperature
Lambda sensor
Spark plug power supply Spark plug
Shielded cap
HV cable
HV coil
Intake system Air filter
Filter box (sealing)
Air cleaner joint (sealing)
Parameter reliability Throttle valve position signal
Engine temperature signal
Intake air temperature indicator
Ignition advance
Fuel system Fuel level in the tank
Fuel pressure
Fuel filter
Injector capacity
Vespa LX - S 125 3V ie 150 3V ie (2012) Injection
INJEC - 185

Vespa LX 2012 Specifications

General

Engine Type	Single-cylinder, 4-stroke
Displacement	124 cc
Cooling System	Air-cooled
Fuel System	Carburetor
Transmission	Automatic CVT
Fuel Tank Capacity	8.6 liters
Seat Height	785 mm
Curb Weight	114 kg
Length	1, 770 mm
Width	705 mm
Height	1, 140 mm
Max Power	10.3 hp @ 7, 750 rpm
Front Suspension	Single arm with coil spring and hydraulic shock absorber
Front Brake	200 mm
Rear Suspension	Coil spring and hydraulic shock absorber
Rear Brake	110 mm drum