running super rich

[e-dirtym52]

Obd1 m52 running 21.5 injectors and I'm running incredibly rich. Put in New pump and Fpr and still runs super rich. Trying to lean it out thinking a tuning bug might be an issue I put in 17 pound injectors and it runs incredibly lean. I've tried looking for vacuum leaks before with no luck but I'm going to build a smoke machine and make sure there's nothing because that's about the only thing I can think of unless anyone can think of anything else to check?

I'm trying to borrow an afm as well to see how rich she's running

[sweet3]

I would say its a tuning issue. I'm having the same problem right now. I'm about to purchase a chip from "sssquid" soon.
The obd1 ecu is tuned for 17lbs, but your engine needs 21.5 to be stock. I think a good option is to put a correctly tuned chip in your ecu.
Hope this helps!

[e-dirtym52]

That's what I have is squid. Awesome product. I'm not totally sure if a vacuum leak can make such a big issue without it being completely obvious but I still think I'm going to use a smoke machine just to be totally positive there's no vacuum leaks happening. You never know

[328ijunkie]

Vac leaks cause lean running...

[e-dirtym52]

yea i know i just didn't know if that would lead to other issues or something. trying the green injectors was basically just an experiment. wasn't really expecting it to fix all the issues but just seeing what exactly would happen.