Gilera Nexus 500, Руководство по ремонту, Страница: 245 / 406

Collect the fuel delivered by the injector into the
graduated container.
Power supply pressure = 300 KPa (3 BAR)
Quantity delivered = approx. 40 cm3
YES go to 3 NO go to 4
3 - Perform the injector sealing test.
Dry the injector outlet with a blast of compressed
air. Activate the fuel pump. Wait for one minute,
making sure there are no leaks coming from the
injector. Slight oozing is normal.
Value limit = 1 drop per minute
YES go to 5 NO go to 6
4 - Higher quantities are not expected.
For lower quantities, replace the injector (THER-
MAL UNIT AND TIMING SYSTEM).
5 - The injector is conforming.
6 - Repeat the test. If the fault continues, replace
the injector (THERMAL UNIT AND TIMING SYS-
TEM)
The injector atomisation cannot be checked by
simple methods. The injector is provided with 5
holes whose angulation forms a jet with a taper of
about 80°. The jet thus formed impinges both in-
take valves.
N.B.
- AN INJECTOR WITH LOW FLOW RATE AF-
FECTS THE MAXIMUM PERFORMANCE.
- AN INJECTOR WITH POOR SEAL AFFECTS
IDLING AND THE START-UP FEATURES AF-
TER A SHORT STOP WITH HOT ENGINE.
- IN CASE OF CLOGGING OF THE INJECTOR,
IT IS NECESSARY TO REPLACE IT, ALONG
WITH THE FUEL FILTER CONTAINED IN THE
TANK. CAREFULLY CLEAN THE SYSTEM AND
THE TANK.
Troubleshooting
1 - A failure of the EMS system is more likely to be due to the connections than to the components.
Before searching the EMS system for failures, perform the following checks:
Nexus 500
Injection
INJEC - 53