Mazda RX8 - No.6 Cranks Normally but will Not Start

NO.6 CRANKS NORMALLY BUT WILL NOT START
6 CRANKS NORMALLY BUT WILL NOT START
DESCRIPTION
• The starter cranks the engine at normal speed but the engine will not run.
• Refer to the symptom troubleshooting "No.5 Engine stalls" if this symptom appears
after engine stall.
• The fuel is in the tank.
• The battery is in normal condition.
POSSIBLE
CAUSE
• No battery power supply to PCM
• Open PCM GND or vehicle body GND
• Air cleaner restriction
• Air leakage from intake-air system
• Vacuum leakage
• Improper operation of drive-by-wire control system
• Drive-by-wire control system operates in fail-safe mode (abnormal accelerator
position and TP signal to PCM)
• Poor fuel quality
• Open or short circuit in fuel pump body and related wiring harness
• Inadequate fuel pressure
• Fuel pump relay malfunction (stuck open)
• Fuel pump mechanical malfunction
• Pressure regulator (integrated in fuel pump unit) malfunction
• Fuel injector malfunction (leakage, clogging, improper injection amount)
• Open or short in fuel injector control signal circuit
• Purge solenoid valve malfunction (stuck open)
• Restriction in exhaust system
• Disconnected electrical connector
• No signal from eccentric shaft position sensor, related wiring harness or incorrect
installation
• Improper air/fuel ratio control at starting (abnormal ECT signal to PCM)
• APP sensor malfunction (de-chock control operating due to abnormal accelerator
position signal to PCM)
• 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
• Leakage or clogging in oil pipe
• Leakage or clogging in oil nozzle
• Engine overheating
• Spark leakage from high-tension leads
(w) RX8-Engine Troubleshooting
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