Operation CHARM: Car repair manuals for everyone.

Air & Fuel Control


The fuel charging assembly is comprised of six individual components which perform the fuel and air metering function:
1. Air control.
2. Fuel injector nozzles.
3. Fuel pressure regulator.
4. Fuel pressure diagnostic valve.
5. Cold engine speed control.
6. Throttle position sensor.
The fuel injector nozzles are mounted vertically above the throttle plates and are electro-mechanical devices which meter and atomize the fuel delivered to the engine. The injector valve bodies consist of a solenoid actuated pintle and needle valve assembly. An electrical control signal from the EEC electronic processor activates the solenoid.