Gilera 633721 - Page 199

Possible Cause Operation
Air temperature
Coolant temperature.
Atmospheric pressure
Ignition efficiency
Spark plug
Ignition timing
Correctness of the parameters
Throttle valve position sensor
Stepper
Coolant temperature sensor
Intake air temperature sensor
Intake system cleaning
Air filter
Diffuser and throttle valve
Additional air pipe and Stepper
Intake system sealing (infiltrations)
Intake manifold - head
Throttle body - manifold
Intake sleeve
Filter box
Fuel feed (low pressure)
Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Analysis of exhaust fumes before the catalytic converter Trimmer value adjustment (CO % adjustment)
Engine does not rev down
ENGINE DOES NOT RETURN TO THE IDLING SPEED/IDLING SPEED TOO HIGH
Possible Cause
Operation
Presence of faults detected by the self diagnosis
Pump relay
H.V. coil
Injector
revolution timing sensor
Air temperature
Coolant temperature.
Atmospheric pressure
Ignition efficiency Ignition timing
Correctness of the parameters
Throttle valve position sensor
Stepper
Coolant temperature sensor
Intake air temperature sensor
Intake system sealing (infiltrations)
Intake manifold - head
Throttle body - manifold
Intake sleeve
Filter box
Fuel feed (low pressure)
Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Analysis of exhaust fumes before the catalytic converter Trimmer value adjustment (CO % adjustment)
Exhaust backfires in deceleration
EXHAUST BACKFIRES WHEN DECELERATING
Possible Cause
Operation
Presence of faults detected by the self diagnosis
Pump relay
Nexus 500 euro 3 Injection
INJEC - 199