So it needed a new carb. The shafts were too worn, it was waaay too dirty, leaking from numerous places, and when I went to work on it, replacing the gaskets, being careful, I aggitated the idle mixture screw housing and it decided it wouldn't idle EVER. So new carb time.

 

We took it to a shop, because well, I'm tired of working on this car, and it was inexpensive for them to replace it. The carb we had was the CA emissions one, and the one we replaced it with was the non-ca, 2wd one.

 

Problems since we got it back-

 

The EGR vacuum port was hooked up to the AT vacuum

Misc. vacuum wires went in weird areas

One vac on the carb which draws in air at idle, (above the idle screw) was left free to suck in air

It was idleing at 1500rpm*

 

So at idle, it was like 1500rpm right? So i turn it down a little to about 800 or so, and we get it to operating temp-> Now it would idle and just about die at 500rpm. Sounds like it was running lean to me! So I checked the idle fuel mixture screw. They had it one fuel turn out. That's it. No wonder they had it idleing at 1500 rpm, that's like practically out of the idle circuit!!!

 

Anyhow, labor was cheap, and way less annoying than me doing it (again) so all in all, the $105 in labor wasn't too bad I think. But I still need to get the airbubbles out of the coolant system. I think it's time for a new coil and fuel filter.

So ...you going to take it in and have them change the coil and fuel filter too

nah... lol.

 

hey, about two to two and a half turns out right? (that would be 4 to 5 half turns) on the idle mixture screw right? Two runs real well, and two and a half doesn't sound any different.

 

So anyhow, it purrs now (with a slight exhaust leak)

Yeah, 2 turns out from "lightly" seated is the base setting. You'll want to set idle speed at/near 750 RPM's. Then you turn mixture screw in "slowly" until it starts to stumble, turn it back out "slowly" until it smoothes out again, (count number of turns, be they 1/4, 1/2, or full ones). Now, turn it out until it stumbles again, then turn it back in untill smooth, (once again counting turns). You want to try and get it near the middle of the "stumbles". If your RPM's differ from intial setting, turn idle speed screw to bring it back to where it should be, and repeat the mixture adjustment. Sometimes you can get it right away, or within a couple tries, sometimes it takes some doing. Also be sure to check ignition timing before, and after, as it will have an effect on idle speed also. I know, Subaru's use ported vacuum for the vacuum advance and it shouldn't be a factor at idle, but still check it.... Also be sure you have no vacuum leaks anywhere, as they will mess with you in a bad way.

hey Jon I'm in town for the week, hit me up 541 990 8697, if you can make it, we're havin a BBQ @ my house on Wednesday in the afternoon.

 

As for the car, yeah Tom's method is abotu right, the "right" way is to use a CO meter but turnng it in until it stumbles, then out until it stumbles, then back in to the middle of the no-stumble range is what I've always been told.