When did GM start using Vortec fuel injection?
When did GM start using Vortec fuel injection? GM 4.3, 5.0 and 5.7 Vortec Injector conversion. Vortec 4.3L 5.0L and 5.7L engines from 1996-2002 have been found to be very sensitive to fuel deposits in the fuel injectors. The Vortec Central Sequential Fuel Injection system utilizes a unique fuel injector for each cylinder. Where is the fuel injector in a Vortec? The Vortec Central Sequential Fuel Injection system utilizes a unique fuel injector for each cylinder. The injector coil is located in the central 'spider' with a tube sending the injected fuel to a poppet nozzle in the port of...