FUEL INJECTION

(FI) A fuel system that uses no carburetor but sprays fuel either directly into the cylinders or into the intake manifold just ahead of the cylinders . It uses an electronic sensing device to deliver the correct amount into the combustion chamber . Throttle-body injection locates the injector(s) centrally in the throttle-body housing, while port injection allocates at least one injector for each cylinder near its intake port .