Mazda RX-8 Workshop Manual page 770

STEP
1 Inspect for blockage/restriction or opening between
engine vacuum port and charcoal canister.
Inspect for blockage/restriction or opening in the
fuel tank vent system.
Is fault indicated?
2 Inspect the purge solenoid valve.
(See PURGE SOLENOID VALVE INSPECTION [13B-
MSP].)
Is the solenoid operating properly?
3 Visually inspect for fuel leakage at the fuel injector,
O-ring and the fuel line.
Service if necessary.
Install the fuel pressure gauge between the fuel
pipe and the fuel distributor.
Start the engine and run it at idle.
Measure the fuel line pressure at idle.
Is the fuel line pressure correct at idle?
(See FUEL LINE PRESSURE INSPECTION [13B-
MSP].)
4 Verify that the charcoal canister is installed properly.
Is the charcoal canister installed properly?
5 Inspect for air leakage from the charcoal canister.
(See CHARCOAL CANISTER INSPECTION [13B-
MSP].)
Is there air leakage from the charcoal canister?
6 Turn the ignition switch to the ON position (engine
off).
Retrieve any DTCs using the M-MDS.
INSPECTION RESULTS
Yes Replace the vacuum hose.
No Go to the next step.
Yes Go to the next step.
No Replace the purge solenoid valve.
Yes Go to the next step.
No Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION
Yes Go to the next step.
No Install the charcoal canister properly.
Yes Replace the charcoal canister.
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See DTC TABLE
ACTION
[13B-MSP].)
[13B-MSP].)