Mazda RX-8 Workshop Manual page 678

POSSIBLE
CAUSE
WARNING:
The following troubleshooting flow chart contains fuel system diagnosis and repair
procedures. Read the following warnings before servicing the fuel system:
CAUTION:
Open or short in fuel injector (FP) (RP) control signal circuit
Restriction in exhaust system
Purge solenoid valve malfunction (stuck open)
Improper air/fuel ratio control (abnormal ECT signal to PCM)
Erratic signal from eccentric shaft position sensor
MAF sensor contamination (abnormal signal to PCM)
MAF sensor improper installation
Low engine compression
Engine internal malfunction
Abnormal engine oil condition (viscosity, deterioration)
Low oil pressure
Excessive fuel pressure
Air mixed in oil line
Metering oil pump malfunction
Starting system malfunction
Spark leakage from high-tension leads
Spark plug malfunction
Fuel vapor is hazardous. It can easily ignite, causing serious injury and
damage. Always keep sparks and flames away from fuel.
Fuel line spills and leakage are dangerous. Fuel can ignite and cause
serious injuries or death and damage. Fuel can also irritate skin and eyes.
To prevent this, always complete "BEFORE SERVICE PRECAUTION" and
"AFTER SERVICE PRECAUTION" described in this manual. (See
SERVICE PRECAUTION
[13B-MSP].)
Disconnecting/connecting quick release connector without cleaning it may
possibly cause damage to fuel pipe and quick release connector. Always
Leakage or clogging in oil pipe
Leakage or clogging in oil nozzle
[13B-MSP].) (See AFTER SERVICE PRECAUTION
BEFORE