Misfires/Lack Of Power

• Verify air intake system is unrestricted.
• Check EGR valve and solenoid for correct operation.
• Check No. 1 and No. 2 purge control valve operation.
• Check vacuum switching valve operation.
• Check airflow meter for cracks.
• Check airflow operation and resistance value.
• Check atmospheric pressure sensor.
• Check secondary air injection system (RX-7).
• Check Variable Dynamic Effect Intake (VDI) system (RX-7).
• Check variable resonance induction system for correct operation (except RX-7).
• Verify connector at crank angle sensor has correct resistance values (929, RX-7 and most turbocharged models).
• Check A/C cut-off system.
• Check triple induction control system for correct operation (if equipped).
• Ensure fuel system pressure is correct. Use ohmmeter to verify fuel injector terminal resistance.

Check turbo system for damage or wear (if equipped). Turbo system inspection should include the following components:

• Air By-Pass valve
• Engine control unit (ECU).
• Intake air thermosensor in airflow meter.
• Knock sensor and knock control unit.
• Turbo wastegate solenoid valve.