Hi all. My brother bought a 90 camaro 3.1 V6 auto, and it has a rough idle and feels like it has no power. Smells pretty rich when standing near it. I pulled the vacuum hose off the regulator and the idle didn't change whatsoever. Someone told me if it was a bad reg, fuel would come out the vacuum port, but I have never heard this. It also has the crap bosch plus 2 plugs in it which will be getting changed. I tried seafoaming it and it didn't help. Any ideas?

A reg cant be that expensive, and neither are the plugs so I may replace both anyways and see if it runs better. No SES light either, and it does work. Anyone have any ideas?

 

Hey, I just wrote a full page, and the site said I wasn't logging in (I was) and I lost the whole freakin' thing

Instead of trying to remember and re-write the whole thing, just look for my threads I started, esp. the one "Hesitation in 3.1L 5 Spd" from 2006.

I'd start with the injectors, they may be close to plugging the cat now.

The regulator probably is not the problem, get a cheap fuel pressure gauge (about $35.00 at Kragen) to verify. Should be around 38psi at idle (high vacuum) and 47psi with no vacuum. I completely plugged the return line giving the fuel rail 70 psi just to see what would happen, did not run rich at all (this after replacing the injectors).

Good luck!!!

Bob