stock fuel regulator... adjusting rich condition??

[cjman15]

Can the stock fuel regulator be adjusted? My car has been running really rich lately and I was looking for a quick fix or something to get started so I can narrow tha possibilities of the culprit. How do you adjust it, if you can? Thanks alot for your help.

 

[04sleeper]

Auto Specalties makes an adjuster for the stock regulator. It looks loke this.

If you are crafty enough you could make something to work. It is a simple principle that pushes on the diaphram inside the regulator through the vacuum port.

 

[cjman15]

Yeah, I'm asking this because I've had this problem before and a mechanic who is a friend of my dad's fixed it and said he tuned down the fuel, and I didn't think that you could adjust the regulator. Thanks, I'll look into it

 

[04sleeper]

Yeah, I'm asking this because I've had this problem before and a mechanic who is a friend of my dad's fixed it and said he tuned down the fuel, and I didn't think that you could adjust the regulator. Thanks, I'll look into it

Usually the stock regulator does not put out much fuel pressure. Unless the mechanic screwed something into the regulator port he couldn't adjust it. Maybe there is something else wrong making your car run rich like the BAP sensor or something?
Here is a picture of the Holley regulator that is basically a stock regulator modified for adjustment with an adjustment screw with a hole in the center of it for vacuum.

This is the one I use it is only $54.88 and it works great.

 

[cjman15]

what else do you think the problem could be if it's not the fuel regulator?

 

[04sleeper]

Faulty BAP sensor, bad MAF sensor...?

 

[giddyup306]

I have a AFPR for sale. $10 works great. PM me if interested.

 

[HISSIN50]

ECT and ACT also. good luck.

 

[Michael Yount]

Have you pulled the codes? That's the first place to start any diagnostic on the system. And (you said quick fix I know, but for others reading along) attempting to fix a rich condition by adjusting fuel pressure is treating the symptom, not the illness. The computer should keep the car running at the right air/fuel mixture at the stock fuel pressure (38/40 measured with the vacuum line off at idle). If it won't, it's because something's malfunctioning. Pull the codes first and see what they tell you.

Why do you think it's running rich?