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Old 08-04-2007, 07:31 PM   #1
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Angry Engine Running Very Rich!!!

I just had my engine rebuilt and she has no power!! All i seem to smell is gas in the exhaust.... I see a lot of posts on here reguarding weber carbs, but for the moment, I cant afford another $300. Is there anything I can do to cure this problem?? If it HAS TO BE a weber carb, where is the best place to go to buy a good kit?? Im also open to offers for a good used one! Thanks in advance for all the help guys, this is REALLY driving me up the wall!!!!

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Old 08-04-2007, 08:35 PM   #2
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I just had my engine rebuilt and she has no power!! All i seem to smell is gas in the exhaust.... I see a lot of posts on here reguarding weber carbs, but for the moment, I cant afford another $300. Is there anything I can do to cure this problem?? If it HAS TO BE a weber carb, where is the best place to go to buy a good kit?? Im also open to offers for a good used one! Thanks in advance for all the help guys, this is REALLY driving me up the wall!!!!
Ok, what are you running with now? Hard to give you any feedback with what you posted.

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Old 08-04-2007, 09:51 PM   #3
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Stock Carb

I am still running with the originaly carter carb... Nothing has been modified on the rebuild to the carb or the engine...
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Old 08-04-2007, 11:03 PM   #4
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I am still running with the originaly carter carb... Nothing has been modified on the rebuild to the carb or the engine...
Will NY allow you to run an aftermarket Carb. I live in Az and put an MC2100 on mine.
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Old 08-04-2007, 11:42 PM   #5
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disconnect the two hoses that go from exhaust to the air cleaner and see if it makes a difference.I purchased a kit from injector tech .It came with 2 shorter metering tubes and filters and instalation tool.For $30 it has been as good as gold for over 2k miles.i will dig up the info for you.Is this the 258ci with bbd carb?
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Old 08-05-2007, 06:36 PM   #6
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NY doesnt care about emissions as long as the car is 10 years old or older and my jeep is 20.... Is the MC2100 a TB or a carb and how hardis it to install??

Ady, yes it is the 258 with the bbd and ill try to see if i can find the metering tubes you were talking about...
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Old 08-05-2007, 08:26 PM   #7
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as it turns out, I actually put the kit from injector tech in the carb today.... silly me... It did help out some, but I think my choke is sticking half way closed when it should be open now. I am going to attempt to change the diaphram piece on the carb tomorrow afternoon. I am just not sure if it will cure all the problems. I am still smelling gas when I take hills..........
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Old 08-07-2007, 10:31 AM   #8
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as it turns out, I actually put the kit from injector tech in the carb today.... silly me... It did help out some, but I think my choke is sticking half way closed when it should be open now. I am going to attempt to change the diaphram piece on the carb tomorrow afternoon. I am just not sure if it will cure all the problems. I am still smelling gas when I take hills..........
Pretty common for the 258 with the original Carter to bog down on hills. The impulse air/Carter carb is dumping gas into the engine to try to give you more power, and the old 20,00 volt system can't produce enough spark to burn it correctly. The air being pulled back from the exhaust system is too rich so the system fail you at the time you need it the most. Welcome to the world of old jeeps.

I changed mine to a 30,000 volt system and the Motorcraft 2100 and pulled all the pulse air system off. Much better for me up in the mountains.
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Old 08-08-2007, 07:11 PM   #9
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How hard/expensive is the MC 2100 setup???

That sounds like a good idea to me as I see you seem to post a lot on here, I just need to know how hard and expensive that setup is! My poor jeep is almost undriveable right now cause its running so bad! Its more than boggin on hills now, the choke is basically inoperative and its blowin out more gas than its burning I think!
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Old 08-09-2007, 09:09 AM   #10
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That sounds like a good idea to me as I see you seem to post a lot on here, I just need to know how hard and expensive that setup is! My poor jeep is almost undriveable right now cause its running so bad! Its more than boggin on hills now, the choke is basically inoperative and its blowin out more gas than its burning I think!
Look up MC2100 swap on the internet. It will walk you through the process. It is not a cure all but will help a lot. I am having some problems adjusting mine to the altitude (6600 feet) I live at. it's just a matter of getting the components working together. I don't drive it every day so it is taking longer to find and cure the little stuff. The MC2100 runs about $200 and you will need new wires, plugs, and some decent mechanical skills.
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Old 08-09-2007, 08:28 PM   #11
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well ive already thrown in platinum plugs and a complete accel High output ignition system (wires, cap, rotor, coil)
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Old 08-09-2007, 10:01 PM   #12
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well ive already thrown in platinum plugs and a complete accel High output ignition system (wires, cap, rotor, coil)
If you have done all that the next logical step is the carb. Start looking at the current write ups and make your choice. The weber swap is around $300, the MC2100 around $200 and the TBI swap around $1100. Ball park figures but should be close.
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Old 08-10-2007, 04:14 PM   #13
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hey man thanks a lot! I am going to rebuild the carb this week in hopes that it helps it atleast a little so that it will get me till I can afford one of the above mentioned... I think Im leaning towards the webber, but time and the wallet size will tell....
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Old 08-13-2007, 05:36 PM   #14
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I hate to say it but check ebay. i just got a good deal (I think).
http://cgi.ebay.com/ebaymotors/ws/eB...m=230158395377

gonna rebuild it, and hope for the best. Any thing is better that the stock carter carb. I even thought about straping my 7yr old son on top and pouring gas down it once. I hate the carter.


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Old 08-29-2007, 05:38 PM   #15
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Yeah well i rebuilt the garbage and added the new metering hoses, and it continued to get worse, Now it DUMPS gas down the carb after shut off, so its on to a new carb, looking to get likes and dislikes of the webber and MC2100. I need to buy one yesterday. Thanks for any help you guys can give me!
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Old 08-31-2007, 07:41 AM   #16
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Weber!

Well I ordered up the Weber conversion yesterday! It should be here by saturday. I am trying to prep the engine so that when the kit gets here I can toss it on and tune it without having to do everything the same day... I am looking for a diagram on what to take off as far as vaccum and such... I would appreciate any help I can get!!!
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Old 09-09-2007, 11:23 PM   #17
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Crikifur,
Any luck with your weber conversion? BTW, where in NY are ya? I am 100 miles NW of NYC in the heart of Sullivan County NY
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Old 09-10-2007, 05:17 AM   #18
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I just put my weber on over the weekend. 34/34 model. at first it ran really rough. the vacuum tube that went from the pcv i had to take off. so its just the tube from the pcv right to the carb. also i installed a fuel pressure regulator and set it to 3.5, got from advanced auto mr. gasket, and so far it is running great
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Old 09-10-2007, 05:58 PM   #19
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I installed my weber in less than 2 hours! I was amazingly easy... I didnt put in a fuel regulator though. I am wondering if i should, it is still running a little rich. Ive adjusted everything out and it runs real good, but at high idle and when hitting hills, theres still a small gas smell. The power is definatly there, but so is the gas. If anyone has any info, please let me know.

BERN, I live in Chenango County, but right now am down working in orange county...
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Old 09-16-2007, 11:04 PM   #20
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Crikifur,
I grew up in Orange County. My mother still lives in New Windsor, not far from the Hudson River. Good luck with your Jeep. That is a bit of a commute isnt it?
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Old 09-17-2007, 10:08 AM   #21
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I installed my weber in less than 2 hours! I was amazingly easy... I didnt put in a fuel regulator though. I am wondering if i should, it is still running a little rich. Ive adjusted everything out and it runs real good, but at high idle and when hitting hills, theres still a small gas smell. The power is definatly there, but so is the gas. If anyone has any info, please let me know.

BERN, I live in Chenango County, but right now am down working in orange county...
Have you compensated for the altitude? I had to take my 2100 down from 44's to 40 for jet size to get rid of the smell. I live at 6600 feet, way higher than you, but frequently the jets need to be replaced to compensate for a different elevation.
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Old 09-17-2007, 10:37 AM   #22
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Grandpa Jeeper,
I live at 1800 feet Jeep seems to run fine no gas smell I Think I have 47.5 jets. No worries so far. I drove it 200 miles from the mountain to sea level and no problem.
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Old 09-17-2007, 11:20 AM   #23
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well ive already thrown in platinum plugs and a complete accel High output ignition system (wires, cap, rotor, coil)
I was told once to stay away from the platinum plugs because they produce a cooler spark than the conventional plugs. They are designed to last longer not to perform better.
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Old 09-22-2007, 03:09 PM   #24
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platinum plugs create a higher spark than normal plugs but the plug themself dont heat up, causing it to last longer than stock plugs.... I have since installed a complete exhaust and an MSD Coil. It improved everything, except the fuel smell (mainly at idol)... When I have the engine under load, it doesnt smell as bad but still smells of gas, and the amount of gas burning out of the exhaust is almost enough to make your eyes water. I am hoping someone might know the size jet i should buy for the carburator (i live in upstate NY). I am hoping that will fix the last problem I have with my poor jeep! Thanks again all!
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Old 09-23-2007, 11:24 AM   #25
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[QUOTE=crickifur;140019]platinum plugs create a higher spark than normal plugs but the plug themself dont heat up, causing it to last longer than stock plugs.... I have since installed a complete exhaust and an MSD Coil. It improved everything, except the fuel smell (mainly at idol)... When I have the engine under load, it doesnt smell as bad but still smells of gas, and the amount of gas burning out of the exhaust is almost enough to make your eyes water. I am hoping someone might know the size jet i should buy for the carburator (i live in upstate NY). I am hoping that will fix the last problem I have with my poor jeep! Thanks again all![/QUOTE


Crick, As I posted before, I switched down to 40's here in the mountains. Maybe all the politicians are using up the oxygen in NY and you now have thin air to deal with?

seriously though, what do you have the plugs gapped at? With an MSD coil, if it's the high output like the Blaster 2, you need to be gapped at .45 to give you a hotter and fatter spark. Most vehicles will load up at idle unless you burn it up more efficiently.

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