I can't seem to fix a vacuum leak at my #1 primary fuel injector. Back story so far:

I had my injectors cleaned and flow tested while I was doing the emissions removal on my S4 Turbo II. Once everything was back together there was a vacuum leak. Boost leak test led me to the #1 primary. The shop that rebuilt the injectors put new grommets on them, so I put the stock ones back on to see if it would go away. No luck. So I ordered the OEM grommets from mazdatrix, still leaking. Next, I tried caking it all in silicone (using the injector shop's grommets), and it's still leaking.

What else is there to try? I swapped the #1 and #2 injectors and it's still leaking from #1. I can see it bubble when I spray a liquid on it while I have the engine pressured with the boost leak tester. Any help is greatly appreciated, I'm just ready to drive this car.

 

were the o rings changed on the injector diffuser?

 

^ +1

Be careful if removing them to change the o-rings though, they're very brittle (the diffusers themselves).

 

Injector diffuser? That's a new one to me. So I guess the answer would be no. Haha.

 

https://www.rx7club.com/attachments/...y-airbleed.jpg

 

Ok, that makes sense. What's the best way to remove them so I can replace those o-rings?