rochester 2bbl, stock v6, 84 camaro sport coupe

getting 6-8 mpg on a good day, barely running. exhaust smells rich, which is the only thing i can see that would explain the mileage. checked the chilton, gave me the 'factory settings are set and sealed, you should only have it adjusted by an authorized chevy dealer' bull... basically 'even if it breaks you shouldnt fix it yourself'

sick of the mileage and high gas prices, how do i lean it out?

thanks for any help

 

There should be a guide in the chiltons to cut the carborator to get access to the richness ****. You may look up stuff in http://www.s-series.org/ as the carbed 2.8 was more common in the S10 trucks. The **** is buried under the front of the carb. That and a rebuild might help you out. However, the 2bbl rochester carb is kinda crap. Either they run good, or bad. No middle.

 

yes, i am aware that they are crap and i did rebuild it. i just want my car worth driving until i'm ready to swap a 305 in.

 

Then try to get to that screw. Sounds like your best bet. If I recall, you have to take the carb off and then chew out the metal that covers it. My brother had a carb in his s10 with the mod done. He could adjust it with some plyers.

 

I think you might be fixing the wrong problem.

How's the exhaust? Cat plugged? check....
How's the ignition? Big HEI? how's the coil? How's the ground strap? How's that damned carbon button in the middle? How is your cap/rotor? How's your pickup coil (i've seen a lot of these go bad on older 2.8s)? How are your plugs/wires? check...

The thing about those vari-jet carbs is that they are also prone to failure at the mixture control solenoid. It doesn't sound like you are having huge emmision testing issues yet so you may want to get an older one that is mechanical and swap it on. You can get them for the 4.1 chevy in-line six for the 1980 pickup. There are other older GM applications as well that are not computer controlled.

Just a few ideas...

 

I want to be putting any money i have into my v8, and i was looking for a jerryrig type thing. it passes emissions fine, cat was brand new last summer. if something goes on the bracket right forward of the coil, it's all gone. there is no plug for the o2 sensor to plug into, so im guessing something goes there. if you don't mind, blue, i'd like to get a couple pictures or something and talk to your brother about how he did it, if it wouldn't be to much trouble.

 

i might have that carb laying around the house somewhere. I'll take a look when I get home for you.

You should check everything you can until then though, and make sure you have good spark and all that, like KrisW stated.

 

If you go onto Napa's website you can do a search for a non-CCC Verajet.

Just choose your Vehicle as a 1980 Chevy Citation. With the 80 4.1 I-6, it might be calibrated slightly differently.

I used to have an 84 SC and I thought about going the ECM free route.

 

Yeah, I was going to buy a timing light this weekend because it's idling horribly rough and it didn't before I replaced the valve cover gaskets, so maybe I bumped the dist getting them off.

Thanks for the help Blue.

 

Guess what I found! It helps when you hack up the top of the screw too, as this pic is viewed from below.

 

Wait, so that little thingy that gets un-recessed will let me manually adjust my mixture?

 

yup. thats why chevy hid it from use. if its there, people would play with it. hack on brother man, hack on.