What is the fuel pressure in a CSFI system?
What is the fuel pressure in a CSFI system?
Fuel pressure in the CSFI system is a bit higher than the CPI system (60 to 66 psi with key on engine off), and the regulator maintains the operating pressure at 55 to 57 psi. The poppet valves in the spray nozzles also open at a slightly lower pressure (about 40 psi). The injectors fire just before each intake valve opens.
When did Vortec start using CSFI fuel injection?
The system was used on 4.3L V6 Vortec engines through 1995, and was redesigned in 1996 and renamed “Central Sequential Fuel Injection” (CSFI). The system was also added to 5.0L and 5.7L Vortec V8 engines.
What should the fuel pressure be in a CPI system?
Fuel pressure in the CPI system with the key on and engine off (KOEO) should be about 58 to 62 psi. Some specs say 54 to 60 psi is OK, but some fuel injection experts insist that to start and run properly, most CPI systems really need at least 58 psi. Pressure is generated by a tank-mounted electric fuel pump.
What should fuel pressure be on GM 4.3L Vortec?
You can find this tutorial in Spanish here: Cómo Probar La Bomba de Combustible (GM 4.3L, 5.0L, 5.7L) (at: autotecnico-online.com ). The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start.
What should the pressure be for fuel injection?
In ways, these systems function sort of like an old-fashioned diesel injection system except that there is no mechanical fuel pump, fuel injection is controlled electronically, and the operating pressures are much lower. Fuel pressure in the CPI system with the key on and engine off (KOEO) should be about 58 to 62 psi.
Fuel pressure in the CSFI system is a bit higher than the CPI system (60 to 66 psi with key on engine off), and the regulator maintains the operating pressure at 55 to 57 psi. The poppet valves in the spray nozzles also open at a slightly lower pressure (about 40 psi). The injectors fire just before each intake valve opens.
Fuel pressure in the CPI system with the key on and engine off (KOEO) should be about 58 to 62 psi. Some specs say 54 to 60 psi is OK, but some fuel injection experts insist that to start and run properly, most CPI systems really need at least 58 psi. Pressure is generated by a tank-mounted electric fuel pump.
You can find this tutorial in Spanish here: Cómo Probar La Bomba de Combustible (GM 4.3L, 5.0L, 5.7L) (at: autotecnico-online.com ). The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start.
What’s the fuel pressure on a 97 Vortec?
My 97 runs good but some hard cold weather starts. I just changed my fuel filter last year and the old filter seemed fine (was able to blow air though) I checked my fuel pressure and its 59-60 key on engine off and 52 at idle, jumps to 60-62 after blipping throttle.
