How does a throttle body injector work?
How does a throttle body injector work? With Throttle Body Injection (TBI), one or two injectors mounted in the throttle body spray fuel into the intake manifold. Fuel pressure is created by an electric fuel pump (usually mounted in or near the fuel tank), and the pressure is controlled by a regulator mounted on the throttle body. Where does throttle body fuel injection take place? In the early days of fuel injection, automakers developed throttle-body fuel injection (TBI) as a cheap way to switch over to fuel injection. TBI mounts the injector (s) right in the throttle body. Why is...