[Irace86.2.0]

Originally Posted by snowtaipan

I know at idle there has to be vacuum, opening the BPV. As RPMs go up, vacuum at the top drops, shutting the BPV and creating boost. The BPV retracts (opens) at 10in/hg or 5 PSI vacuum.

If an injector went out, I'd think I'd have a misfire code or detonation, wouldn't I? What would a gad injector do to timing advance?

I pinned out both O2 sensors, both are good, but I noticed that A/F sensor 1 reads normal but O2 sensor 2 reads super rich (It should be at most .55v, its reading .8!)

I also had new codes: P0171 P0170 and P117B
The only thing all three have in common is the ECM and fuel pressure. I can see that my pump isn't at max output, but my fuel rail pressure doesn't have a reading at all.

I still think the direct injector failed or the seal failed. Why would the direct injectors keep getting called out and a lean condition? It is hard to diagnose these things online. I replaced the injector seals. See my build for images. It really isn’t too hard or laborious to do.