Induction System

The fuel/air mixture needed for burning in the cylinders is provided by Sequential Multiport Fuel Injection (SFI).

The fuel flow is as follows:
- Fuel is supplied from the vehicle fuel tank by a high pressure electric fuel pump mounted in the fuel tank.
- The fuel is filtered and sent to the fuel injectors.
- A fuel pressure regulator on the fuel injection supply manifold controls the fuel delivery pressure up to 269 kPa (39 psi).
- Excess fuel supplied by the fuel pump, but not needed by the engine, is returned to the vehicle fuel tank by a fuel return tube.

This fuel induction system is mounted on an aluminum intake manifold which in turn is bolted to cast iron cylinder heads.