Vespa LX 2012 User Manual

Possible Cause Operation
HV coil
Injector
Revolution timing sensor
Air temperature
Engine temperature
Ignition efficiency Spark plug
Ignition timing
Correctness of the parameters Throttle valve position sensor
Stepper
Engine temperature sensor
Intake air temperature sensor
Intake system cleaning Air filter
Diffuser and throttle valve
Stepper
Intake system sealing (infiltrations) Intake manifold - head
Throttle body - manifold
Air cleaner joint
Filter box
Fuel system (low pressure) Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Engine does not rev down
ENGINE DOES NOT RETURN TO IDLING SPEED/IDLING SPEED TOO HIGH
Possible Cause
Operation
Presence of faults detected by the self diagnosis Pump relay
HV coil
Injector
Revolution timing sensor
Air temperature
Engine temperature
Ignition efficiency Ignition timing
Correctness of the parameters Throttle valve position sensor
Stepper
Engine temperature sensor
Intake air temperature sensor
Intake system sealing (infiltrations) Intake manifold - head
Throttle body - manifold
Air cleaner joint
Filter box
Fuel system (low pressure) Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Exhaust backfires in deceleration
EXHAUST BACKFIRES WHEN DECELERATING
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
Correctness of the parameters Throttle valve position sensor
Stepper
Engine temperature sensor
Intake air temperature sensor
Intake system sealing (infiltrations) Intake manifold - head
Injection Vespa LX - S 125 3V ie 150 3V ie (2012)
INJEC - 184

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