Engine Knocking; Fuel Supply System - APRILIA SR MAX 125 ie Service Station Manual

Injection
Possible Cause
Spark plug power supply
Intake system
Parameter reliability
Fuel system

Engine knocking

PRESENCE OF KNOCKING (COMBUSTION SHOCKS)
Possible Cause
Presence of faults detected by the 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 system circuit includes the electric pump, the filter, the pressure regulator, the electro-injector
and the fuel delivery 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 - 168
SR MAX 125 ie
Operation
Air temperature
Coolant temperature
Lambda probe
Spark plug
Shielded cap
HV cable
HV coil
Air filter
Filter box (sealing)
Intake sleeve (sealing)
Throttle valve position signal
Coolant temperature indicator
Intake air temperature indicator
Ignition advance
Fuel level in the tank
Fuel pressure
Fuel filter
Injector capacity
Operation
Pump relay
HV coil
Injector
Revolution timing sensor
Air temperature
Coolant temperature
Lambda probe
Spark plug
Throttle valve position signal
Coolant temperature indicator
Intake air temperature indicator
Ignition advance
Intake sleeve
Filter box
TPS reset successful
Fuel pressure
Fuel filter
Injector capacity
Fuel quality
Selection of the cylinder base gasket thickness