PIAGGIO Beverly Tourer 250 i.e. Service Station Manual page 166

Injection
Possible Cause
Fuel feed (low pressure)
Exhaust backfires in deceleration
Possible Cause
Presence of faults detected by the self diagnosis
Correctness of the parameters
Intake system sealing (infiltrations)
Fuel feed (low pressure)
Exhaust system sealing (infiltrations)
Engine revs irregularly
ENGINE IRREGULAR PERFORMANCE WITH VALVE SLIGHTLY OPEN
Possible Cause
Intake system cleaning
Intake system seal
Ignition system
Parameter reliability
TPS reset successful
Presence of faults detected by the self diagnosis
INJEC - 166
EXHAUST BACKFIRES WHEN DECELERATING
Beverly Tourer 250 i.e.
Operation
Filter box
Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Operation
Pump relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Lambda sensor
Throttle valve position sensor
Stepper
Coolant temperature sensor
Intake air temperature sensor
Intake manifold - head
Throttle body - manifold
Intake sleeve
Filter box
Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Manifold - head
Manifold - muffler
Muffler welding
Operation
Air filter
Diffuser and throttle valve
Additional air pipe and Stepper
Intake sleeve
Filter box
Spark plug wear check
Throttle valve position signal
Coolant temperature indicator
Intake air temperature indicator
Ignition advance
TPS reset successful
Pump relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Lambda sensor