Switch to «ON» and check if there is voltage, with
injector disconnected and control unit connected,
between the Black-Green cable of the injector con-
nector and the ground lead
With injector disconnected and the injector load
remote control disconnected, check the continuity
of the Black-Green cable between the injector con-
nector and remote control base.
Inspecting the injector hydraulics
To carry out the injector check, remove the intake
manifold by removing the three screws, with anti-
tampering device, fixing the head and loosening
the clamp connecting the throttle body to the mani-
fold.
Release the injector fuel delivery pipe from the
bracket on the throttle body.
Install the appropriate tool for checking fuel pres-
sure and position the manifold over a container
graduated by at least 100 cm³. Connect the injec-
tor with the cable making up part of the supply for
the injection tester. Connect the clamps of the ca-
ble to an auxiliary battery. Activate the fuel pump
with the active diagnosis. Check that, within fifteen
seconds, approximately 40 cm³ of fuel is dis-
pensed with an adjustment pressure of approxi-
mately 2.5 BAR.
Vespa LX 125 - 150 i.e. Injection
INJEC - 173
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