• Fuel-Injection and Carburetor Basics

    1. Traditional basic carburetors were functional units, but it was difficult for vehicles to consistently meet government environmental and emissions standards when using them.
    2. automotives-makers next tried putting electronics on basic carburetors to help control their operation. However, when the electronics failed, emissions could be even higher than with earlier standard carburetors.
    3. The throttle-body design utilized fuel-injectors mounted above the throttle plates of a carburetor chassis. This design worked fairly well.
    4. The most efficient fuel delivery system, however, is achieved using a port fuel-injector. Fuel is introduced into one end of the injector, and the car's computer controls how that fuel passes through into the combustion chamber.
    5. With a fuel injection engine, the problem exhibited by this vehicle could possibly be related to a malfunction in the on-board computer. Checking a car's computer requires expensive diagnostic equipment or, at least, a trip to a service center. Those options might cost anywhere from $60 to $300. (Some automotives centers do, however, rent out diagnostic gear.) The techniques used here follow the more old-fashioned, less expensive approach.
  • Note:

    Fuel-related projects require a well-ventilated work area.