Poor Performance
- Check fuel pump.
- Check throttle cable adjustment.
- Check auxiliary air intake system.
- Check airflow sensor lever adjustment and control plunger.
- Check throttle potentiometer.
- Check fuel system differential and residual pressures.
- Check injector fuel pressure and volume.
- Check full throttle switch.
- Check mass airflow sensor (if equipped).
- Check intake air preheating system.
- Check catalytic converter.
- Check ignition timing.