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Old April 17th, 2010, 06:33 PM   #1
GrandRapidsEagle
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Seeking an mc2100 for an AMC Eagle 4x4

Hi there,

I'm a new AMC Eagle 4x4 owner, and I'm having some carb problems. The carb is finicky as heck, and it idles really high in park and neutral, but seems just fine in drive or reverse.

It was suggested to me by the vehicle's previous owner that I seek out a rebuilt or bolt-on ready mc2100 carb, and that this might be the forum to start at.

If anyone has any helpful information either about the existing carb, or has any leads on buying a new or rebuilt carb it would be most appreciated.

Thanks all!
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Old April 17th, 2010, 06:42 PM   #2
itselliott
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possible vacuum leak in the carb.

Currently running a 2100/2150??




Also,try here: http://theamcforum.com/forum/
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Old April 17th, 2010, 06:55 PM   #3
GrandRapidsEagle
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Thanks for the reply!

The current carb is stock to the vehicle, so I don't know it's model number, but I'm sure that I can find out if that would help things.

It is entirely possible that vacuum is part of the problem, here. Unfortunately, I'm so new to working with carbureted systems that I wouldn't really know where to start.

It seems strange to me that the idle is practically perfect in drive and reverse, but revs up really high in park or neutral.

Also, the carb floods quite easily, and absolutely hates to start cold. These are all reasons that it's been suggested to me that I snag a new or rebuilt carb and start anew.

P.S. - amber lamps lulz.
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Old April 17th, 2010, 07:08 PM   #4
itselliott
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I have recently found a carb guru here in Holland

Jon Bozman
his web site is not ready yet, but contact is there
http://rochesterrestoration.com/

He's pretty good, not cheap tho
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Old April 18th, 2010, 05:41 AM   #5
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If it's all the same as the 258 in a jeep, then it's a Carter carb. The problem w/ them is that the body wears out where the rod goes through that holds the plate in the throttle. The carb body then leaks below the throttle plate. These can be drilled out, bushed and repaired, but then you still have a carb that has a problem idling because the idle tubes are too small and they get clogged.
First thing you can try is to clean out the idle tubes. If you take the top of the carb off, you will see them sticking down into the carb body. I think a small plate and screw hold them down. Seems there is a check ball in there too, so be careful removing it. But, get the tubes out and ream them w/ a guitar string, or piano wire or something similar. Should help a little.
That said, the MC2100 is a very popular swap. It's a good, cheap carb. It's easily rebuilt, and when running right, is almost as good as fuel injection. You are looking for one that has a 1.08 bore. They came on various size motors and the bore varies.
Again, I dont know how your Eagle compares to a CJ7, but from 83 on they had a computer controlled carb. This too messed things up. You can bypass the computer though, which helps the carb run better. Search for "Nutter Bypass" and you should come up w/ instructions.
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