Accelerating dead spot...carb id? - JeepForum.com

 
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post #1 of 8 Old 02-17-2013, 02:13 PM Thread Starter
RedRaiderCJ7
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1984 CJ7 
 
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Accelerating dead spot...carb id?

Seeking a little help here. The jeep is an 84cj7 with a 258 5spd. I have done a TeamRush and nutter bypass on it and I still have a heavy dead spot in the throttle during acceleration. So my question is what's next. I think the carb needs a rebuild but I've also read a thread from Matt about changing springs in the dizzy to improve the advance curve and it sounded like he had great results. One problem is that I can't even ID my carb. I think I've decided that its a solex? It has small differences from the weber but its pretty similar. Can anyone I'd it? And if it is a solex, are these things worth rebuilding? I it doesn't have any of the markings where the weber should, (on the side of the base plate) but it does have some weber stuff on it. Which way would you smarter guys go to get this running better? The jeep idles and runs fine, just doesn't accelerate smoothly and has a stutter. Thanks for the help, here's the carb:



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post #2 of 8 Old 02-17-2013, 06:04 PM Thread Starter
RedRaiderCJ7
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wish I could change the title to just carb ID, anyone know how to do that?
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post #3 of 8 Old 02-18-2013, 12:08 AM
BagusJeep
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Looks like the weber 34dgec sold to fit the 258ci by Weber North America.

Some one saved $80 over buying a Genuine Weber but they are apparently not very good.

As to your flat spot, it could be a faulty or blocked accelerator circuit. When you have the filter off and pump the throttle do you see a nice spurt of fuel?

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1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
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post #4 of 8 Old 02-18-2013, 05:54 AM Thread Starter
RedRaiderCJ7
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Thanks bagus, I'll check that tonight. As for the carb, do you have specifics as to why these are no good? As in could I fix it with a rebuild and new jets etc? I like the setup he has on here and would rather not drop $400 on a new mc or weber.
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post #5 of 8 Old 02-18-2013, 06:47 AM
Matt1981CJ7
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Red,

The 34 is a Solex knockoff branded with the Weber name. They are known to be inferior quality to the true "Made in Spain" Webers. I don't think it's worth re-building.

Get in touch with Tom, at Redline, he'll hook you up with a real Weber 38 for less than you are thinking.

Matt
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post #6 of 8 Old 02-18-2013, 07:22 AM Thread Starter
RedRaiderCJ7
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Thanks guys, sounds like the carb will be my first step to resolving this. I didn't get the "$40 rebuild kit will be perfect" answer I wanted, but such is life. I'll have to live with it the way it is for a little while until I finish my lift. So the 38 is the way to go? What about the "eBay guy", would I be better off dealing with redline?

-Mason
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post #7 of 8 Old 02-18-2013, 11:15 AM
TxJeeper20
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Have you considered a MC2100? I loved mine in my 258 veryforgiving to adjust, and very reliable

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post #8 of 8 Old 02-18-2013, 11:41 AM Thread Starter
RedRaiderCJ7
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I have considered those. There seems to be people with great things to say about both. I personally don't have a preference, I suppose I might let price dictate here, and I don't know which one is cheaper. If one is easier to work with though, I might lean that direction. I have no carb experience and all of the threads I have read haven't helped. I am more of a visual learner so I think if I were to tear into one I would understand it a lot better.
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