Mazda RX-8 Manual page 142

Visually inspect the exhaust
system part.
11
Is there any deformed exhaust
system part?
Perform the fuel pump speed
control operation inspection.
(See Fuel Pump Speed Control
12
Operation Inspection .)
Does the fuel pump speed control
operate properly?
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.
13 Turn the ignition switch to the
ON position.
Is the fuel line pressure correct
with the ignition switch at the ON
position?
(See FUEL LINE PRESSURE
INSPECTION .)
Perform the fuel injector
operation inspection.
(See Fuel Injector Operation
14
Inspection .)
Are the fuel injectors operating
properly?
15
Yes Replace the suspected part.
No Go to the next step.
Yes Go to the next step.
Repair or replace the malfunctioning parts,
No according to the fuel pump speed control
operation inspection results.
Yes Go to the next step.
Zero or low:
Inspect the fuel pump relay and the fuel
pump circuit.
Inspect for clogged fuel line.
If normal, replace the fuel pump unit.
No
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION .)
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION .)
Yes Go to the next step.
Repair or replace the malfunctioning parts,
No according to the fuel injector operation
inspection results.
Yes Go to the next step.
(w) RX8-Engine Troubleshooting
Page 93