Mazda RX-8 Manual page 109

Is a strong blue spark visible while
cranking at each disconnected
high-tension lead for the rotor
where the engine speed does not
drop in Step 8?
Inspect the spark plug for the rotor
where the engine speed did not
drop in Step 8.
11
Is the spark plug wet, covered with
carbon or grayish white?
Perform the drive-by-wire control
system operation inspection.
(See Drive-by-wire Control System
12
Inspection .)
Does the drive-by-wire control
system work properly?
Inspect for cracks on the high-
tension leads.
13
Are there any cracks on the high-
tension leads?
Is a strong blue spark visible at
14 each disconnected high-tension
lead while cranking engine?
Inspect for the following:
Open or short circuit in ignition coil
•
Open circuit in high-tension leads
•
Open circuit between ignition coil
•
connector GND terminal and GND
No
Open circuit between ignition switch
•
and ignition coil
Open circuit between ignition coils
•
terminal C and PCM terminal 2Z,
2AA, 2AC or 2AD
Spark plug is wet or covered with
carbon:
Inspect for fuel leakage from the injector.
Yes
Spark plug is grayish white:
Inspect for clogged fuel injector (FP1)
(RP1).
No Go to the next step.
Yes Go to the next step.
Repair or replace the malfunctioning part
No according to the drive-by-wire control
system operation inspection results.
Yes Repair suspected high-tension leads.
No Go to the next step.
Yes Go to the next step.
Inspect for the following:
Open or short circuit in ignition coil
•
Open circuit in high-tension leads
•
Open circuit between ignition coil
•
connector GND terminal and GND
No
Open circuit between ignition switch
•
and ignition coil
Open circuit between ignition coils
•
terminal C and PCM terminal 2Z,
2AA, 2AC or 2AD
(w) RX8-Engine Troubleshooting
Page 60