Air coming from injector

[NorCalTurbos]

Today looking for vacuum leaks to try and track down my low o2 #s I heard air seeping from my intake right where the injector seats. I'm sure this is not normal. My question is could this affect my o2 reading??? And cause surging at idle?

 

[turbofrank]

Injector o-ring not sealing

 

[NorCalTurbos]

Got it out yesterday luckily it was injector 1 I was able to remove it without taking the whole rail off