1uz injectors timins with scope

[Lex77]

Hello guy,
Does Anybody know if injector pulses for all 4 injectors are in phase? My scope shows that during cranking two injectors have the same timings, but I thought that each one should be shifted in the time...

PS. I am trying to figure out if my ECU lives...

Jack

 

[Zuffen]

They are batch fired.

 

[84pickup1uz]

Batch fire meens 4 of the eight will be on one timing interval and 4 of eight on a different timing interval.

Most early and not so early 1uZ engines still use Batch injector (non sequencial) injection.