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 Carburetor Issue

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othg292g

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Number of posts : 3
Age : 58
Location : San Antonio, Texas
Rig : 1979 Jeep CJ7
specs. : For the most part, stock
Registration date : 2010-07-25

PostSubject: Carburetor Issue   Sun 16 Oct 2011, 8:57 pm

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...
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
specs. : Not Much
Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Mon 17 Oct 2011, 7:12 am

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.
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Stouttrout
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Number of posts : 347
Age : 45
Location : Sour Lake, Texas
Rig : Multiple (too many) JEEPS
Registration date : 2008-01-30

PostSubject: Re: Carburetor Issue   Mon 17 Oct 2011, 12:42 pm

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.
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othg292g

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Number of posts : 3
Age : 58
Location : San Antonio, Texas
Rig : 1979 Jeep CJ7
specs. : For the most part, stock
Registration date : 2010-07-25

PostSubject: Re: Carburetor Issue   Thu 20 Oct 2011, 12:08 pm

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...
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
specs. : Not Much
Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Mon 14 Nov 2011, 10:52 pm

How did it work. Im thinking of trying it.
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Deacon
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Number of posts : 1482
Age : 36
Location : Helotes, TX
Rig : '06 TJ
Registration date : 2009-07-06

PostSubject: Re: Carburetor Issue   Thu 17 Nov 2011, 3:26 pm

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
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
specs. : Not Much
Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Thu 17 Nov 2011, 4:56 pm

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.
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Deacon
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Number of posts : 1482
Age : 36
Location : Helotes, TX
Rig : '06 TJ
Registration date : 2009-07-06

PostSubject: Re: Carburetor Issue   Sat 19 Nov 2011, 11:51 pm

Well let us know how it turns out...
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
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Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Fri 25 Nov 2011, 7:48 am

Ill be taking it back
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
specs. : Not Much
Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Sun 27 Nov 2011, 8:42 pm

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.
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Stouttrout
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Number of posts : 347
Age : 45
Location : Sour Lake, Texas
Rig : Multiple (too many) JEEPS
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PostSubject: Re: Carburetor Issue   Wed 14 Dec 2011, 11:45 pm

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.
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
specs. : Not Much
Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Thu 15 Dec 2011, 4:10 pm

Wouldn't swear it is fuel injected, but it runs better.
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Stouttrout
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Number of posts : 347
Age : 45
Location : Sour Lake, Texas
Rig : Multiple (too many) JEEPS
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PostSubject: Re: Carburetor Issue   Fri 16 Dec 2011, 3:03 am

You running an HEI? If you get it tuned right, you can crawl up a mountain and barely here the engine sputter.
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
specs. : Not Much
Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Fri 16 Dec 2011, 7:56 pm

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
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Stouttrout
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Number of posts : 347
Age : 45
Location : Sour Lake, Texas
Rig : Multiple (too many) JEEPS
Registration date : 2008-01-30

PostSubject: Re: Carburetor Issue   Sat 17 Dec 2011, 2:13 am

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.
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Beached Bum
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Number of posts : 481
Age : 43
Location : Selma TX
Rig : 1986 CJ7
specs. : Not Much
Registration date : 2011-02-06

PostSubject: Re: Carburetor Issue   Sat 17 Dec 2011, 10:01 am

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.
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