Carburetor Issue

Hello all... I haven't posted in a while due to a severe neck injury and months of rehab, but I'm finally doing well and I need some advice regarding my 1979 CJ7. I'm looking for a mechanic that's proficiant with the 258 engine. The CJ came from So Cal and the previous owner removed all the emissions. It runs great, but idles not so great. It has rebuilt Carter BBD 2 barrel and I just cant get it dialed in. Any help in finding a good mechanic to help me out with this would be greatly appreciated. Thanks, Rick...

I dont know what your carburetor issues are but quite honestly I found a can of sea foam works well with mine. Ive been through three carburetors thinking they were going bad. Every now and then mine will start dieing out at idle, especially after a trip to the beach. Seems to be just a normal CJ thing. I throw a can of sea foam in when it starts happening and it takes care of it after one tank of gas.

The first thing you want to do with a carter to get it running good is up bolt the four mounting nuts, left up firmly on the carb and throw it away. They are worthless even in a rebuild. Get an MC2100 form a ford on there and you will swear you have fuel injection. I have a high dollar weber on one and an MC2100 on the other. I like the MC2100 best. You can get it rebuilt at Autzone or off ebay. Add that carb and an HEI distributor and it will be one of the best running jeeps around. First mods I do on a 258.

Thank you for the replies. I like the idea of the MC2100 carb and the HEI distributor. I'm in the process of trying to find the lowest price and once I get them installed, I'll let you know how it runs! Thanks again...

How did it work. Im thinking of trying it.

What Stouttrout suggests seems to be the consensus among guys that deal with the 258. Here are a couple of threads Google turned up that may help shed some light on parts and process. IIRC, there's a 2150 and a 2100, and the difference may have been one being a mechanical choke versus electric/automatic. I'm not 100% on that.

http://jeep-forums.4wd.com/showthread.php?31498-Weber-vs-Motorcraft-2100&s=4e31f2a4041a578bded5958e4419a4c3&p=253984&viewfull=1#post253984

http://printfu.org/motorcraft+mc2100 -- lots of great info and pics

I've been trying find someone who knew about this but haven't had any luck. I just blew 300 bucks on a custom built carburetor that replaces mine minus the electrical. I'm hoping by eliminating the electrical this will solve my carburetor issues. I guess we will soon see if I waisted another 300 bucks.

Well let us know how it turns out...

Ill be taking it back

Took the trash back, bought the 2100. So far so good. Cleaned up the engine compartment quite a bit. Seems to be a good conversion so far.

Done quite a few and run quite a few with the 2100. Great little carb. Do that and put an HEI on it and you will swear you have fuel injection. you can junk yard an HEI.

Wouldn't swear it is fuel injected, but it runs better.

You running an HEI? If you get it tuned right, you can crawl up a mountain and barely here the engine sputter.

Not too sure what I have. Gonna look into that next. Randy found this one for me. Im gonna look at this.

http://www.4wheelparts.com/Performance-Parts/D-U-I-Distributor-by-Performance-Distributors.aspx?t_c=74&t_s=43&t_pt=3825&t_pl=103834&t_pn=P%2fD40620


I also found these. What would you recomend.

http://www.summitracing.com/search/Department/Ignitions-Electrical/Part-Type/Distributors/Cap-Style/Male-HEI/Make/JEEP/Engine-Size/4-2L-258/Year/1986/Product-Line/Summit-Racing-Blueprinted-HEI-Distributors/?autoview=SKU


Blue, Red, or Black?

http://www.summitracing.com/search/Department/Ignitions-Electrical/Part-Type/Distributors/Cap-Style/Male-HEI/Make/JEEP/Engine-Size/4-2L-258/Year/1986/Product-Line/Davis-Unified-Ignition-AMC-Street-Strip-D-U-I-Distributors/?autoview=SKU

Dont spend the coin on those expensive ones. i have installed 3 of these and they are still out there running.

http://www.ebay.com/itm/AMC-JEEP-232-258-4-0-4-2-6-CYL-HEI-DISTRIBUTOR-6511-CL-/370523471748?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5644eb7f84

The problem with the stock is spark jump and weak points system. The higher the RPM the more spark jump you will get. The cap is so small it can not be helped.

i like that, its ordered and on the way. thanks for the info. just curious, when i install this distributor, will this eliminate the ignition control module.