Mazda RX-8 Workshop Manual page 681

Is the spark plug wet, covered
with carbon or grayish white?
8 Visually inspect the eccentric
shaft position sensor and the
teeth of the pulse wheel.
Are the eccentric shaft position
sensor and the teeth of the pulse
wheel normal?
9 Attempt to start the engine at
part throttle.
Does the engine run smoothly at
part throttle?
10 Inspect the fuel line pressure.
(See FUEL LINE PRESSURE
INSPECTION [13B-MSP].)
Is the fuel line pressure correct?
11 Is the fuel line pressure held
after the ignition switch is turned
off?
(See FUEL LINE PRESSURE
INSPECTION [13B-MSP].)
Inspect for clogging fuel injector (FP) (RP).
No Install spark plugs in the original positions.
Go to the next step.
Yes Go to the next step.
No Repair or replace the malfunctioning part according to the
inspection results.
Yes Inspect the Drive-by-wire Control System Inspection.
(See
ENGINE CONTROL SYSTEM OPERATION INSPECTION
[13B-MSP].)
No Go to the next step.
Yes Go to the next step.
Zero or low:
No
Inspect the fuel pump relay and the fuel
pump circuit.
Inspect for clogged fuel line.
High:
Replace the fuel pump unit.
(See
REMOVAL/INSTALLATION
Yes Go to the next step.
No Inspect the fuel injector.
(See FUEL INJECTOR INSPECTION
If normal, replace the
fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION
[13B-MSP].)
FUEL PUMP UNIT
[13B-MSP].)
[13B-MSP].)