Fuel Filter Check - PIAGGIO MP3 400 i.e. Service Manual

Injection
Check during regular operation by placing the ap-
propriate tool between the pump and the injector.
With battery voltage > 12 V check that the fuel
pressure is 3 BAR and that the input current is ~2.8
A
With the battery voltage > 12 V, check the pump flow rate by disconnecting from the injector the pipe
equipped with the pressure gauge of the appropriate tool. Get a graded burette with a flow rate of
approximately 1 L. Rotate the pump using the active diagnoses of the palm top computer. Using a pair
of long flat needle-nose pliers, choke the fuel pipe making the pressure stabilise at approx. 2.9 ÷ 3 BAR.
Be careful not to further choke pipes if pressure remains evenly at 3 BAR while flow rate decreases.
Check that within 15 seconds the pump has a flow rate of approx. 300 cm³.
Specific tooling
020480Y Petrol pressure check set

Fuel filter check

Disconnect the terminals from the electric pump
Remove the screw shown in the photograph
INJEC - 20
MP3 400 i.e.