Mazda RX8 - Page 38

Disconnect the fuel line quick
release connector and install the
fuel gauge to the fuel line.
Short the check connector
terminal F/P to the body GND
using a jumper wire.
Turn the ignition switch to the ON
position.
Is the fuel line pressure correct
with the ignition switch ON?
(See FUEL LINE PRESSURE
INSPECTION .)
No
Zero or low:
Inspect the fuel pump relay and the fuel
pump circuit.
Inspect for clogged fuel line.
Inspect the fuel pump resister.
If normal, replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION .)
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION .)
Yes Go to the next step.
22
Visually inspect for fuel leakage
at the fuel injector, O-ring and
fuel line. Service if necessary.
Is the fuel line pressure held after
the ignition switch is turned off?
(See FUEL LINE PRESSURE
INSPECTION .)
No
Inspect the fuel injector.
(See FUEL INJECTOR INSPECTION .)
If the fuel injector is normal, replace the fuel
pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION .)
23 Yes Go to the next step.
(w) RX8-Engine Troubleshooting
Page 38