Vx Commodore 2002 running rough Changed a few things

[Nut Kracker]

A lean condition is often the sign of bad o2 sensors.
The thing with these, is that they DONT always set a trouble code.

 

[Clubsported]

Yes i agree 100 percent however i brought reconditioned exchanged injectors today put them on and theres little change it now idols better but still has a miss .
Im thinking to go down the road of 02 sensors to see if it clears it up. But the miss i dont think that would be 02 sensors .

 

[Jxfwsf]

faulty egr?

Try undoing the pipe from the throttle body and block the hole up good so there's no vac leak.
On a cold start can you feel the exhaust pushing out the corrugated heat shielded pipe from the egr?

Could almost explain lean running and miss..... just not on one particular cylinder
and by cold start i mean engine block under 65°C