brucelee1

iTrader: (2)

As far as I can tell, my 2012 Lexus ES350 has sequential fuel injection engine.

Is that correct or do I have direct fuel inject.

Thanks,

es350chuck

That is correct, the gs and is have 2gfrse which is the direct inject. We have the 2gfre motor.

ESh

No, we don't have sequential injection. We have port injection.

2GR-FSE - sequential (IS, GS)
2GR-FE - MPI/port injection (ES, RX, Venza....)

brucelee1

iTrader: (2)

Thanks guys, I am glad to be rid of the direct injection that I had in the GS. Strong motor but very loud and un-Lexus like IMHO.

Also, I hear the DI motors have carbon build up issues.

Good stuff.

brucelee1

iTrader: (2)

Interesting, according to Lexus spec sheet, the 2012 ES350 has:

Fuel System Electronically controlled sequential fuel injection (SFI)

brucelee1

iTrader: (2)

More on that.

Sequential fuel injection
Sequential fuel injection, also called sequential port fuel injection (SPFI) or timed injection, is a type of multi-port injection. Though basic MPFI employs multiple injectors, they all spray their fuel at the same time or in groups. As a result, the fuel may “hang around” a port for as long as 150 milliseconds when the engine is idling. This may not seem like much, but it’s enough of a shortcoming that engineers addressed it: Sequential fuel injection triggers each injector nozzle independently. Timed like spark plugs, they spray the fuel immediately before or as their intake valve opens. It seems a minor step, but efficiency and emissions improvements come in very small doses.
Read more at https://www.cars.com/articles/what-a...iCW3iLMKQSD.99.