Fuel Leakage Test - Mazda MX-5 1990 Workshop Manual

05UOFX-174
~
"
GND F/P
05UOFX-175
05UOFX-176
FUEL SYSTEM
F
1 . Disconnect the negative battery terminal.
2. Remove the air valve. (Refer to page F--98.)
3. Remove the PCV hose.
4. Disconnect the vacuum hose.
5. Disconnect the injector connectors.
6. Remove the delivery pipe and the pressure regulator.
7. Remove the grommets, injectors, and insulators.
Inspection
Fuel leakage test
1. Remove the air valve.
2. Firmly affix the injectors to the delivery pipe with wire.
3. Disconnect the injector connectors.
4. Remove the delivery pipe and injectors together with the
fuel hoses connected.
5. Connect diagnosis connector terminals (F/P) and (GND) with
a jumper wire.
6. Turn the ignition switch ON.
7. Tilt the injectors approx. 60 degrees and verify that no fuel
leaks from the injector nozzles.
8. If fuel leaks from an injector, replace it.
Note
• After 1 minute a drop of fuel from the injector is ac-
ceptable.
9. Turn the ignition switch OFF and remove the jumper wire.
F-113