Hard to find which bad injectors but they pass test.
Well still having issue with fuel consume at idle it way much.
New valve cover gasket wiring and plug.
Change few injectors.
Pass millions test on buzz test cold and HOT 100%
Test cylinder contribution only it show #8 due grey CPS I had.
What I notice everytime cold start I do had miss with blue smoke. When I put in gear and acceraltion it like sluggish for few seconds then it flip switch there POWER it jerky rev. If you do brake power. Rev 1000-1200 it shaky miss.
When it become hot it smooth with little miss happened often with grey cps.