MC 2100 carb search

[jeeperofva]

I bought a carb from the fellow in Colorado and it want work on my jeep. I purchased a 2150 with # 47 jets or that is what he sent in the trade. I got screwed, anyway I am looking for a rebuilt 2100 or to swap somebody my 2150 for a 2100. I have a 1980 cj 5 with 258 6 cyl and the 2150 is to big. email me chuck_04 at comcast.net

[Andrew]

47 jets are fine.

2150 doesn't indicate the size of the carb. A 2150 is not necessarily larger than a 2100.

What is cast on the side of carb?

[jeeperofva]

it is a 1.08 but I cant get it to work or run right. I have fooled with this thing until i'm ready to throw it in the trash "put my carter back on". I have changed the vacuum several ways but still want idle right or rev up. It backfires through the exhaust when Idling back down. I have changed the timing and everything I can think of !!!

[TerryD]

Sounds like the carb just needs some decent tuning work. If you want, I can take a look at it sometime and see what I can figure out.

[Andrew]

That's the right carb!

1.08 MC 2100/2150
46/47 jets
8.5-10.5 Power Valve (they do not give you the right ones in the kits)

They are dead simple too.

Sounds like you have a vacuum leak.

Try the carb cleaner trick thingy. Spray carb cleaner on various spots where a leak could be (around the base maybe). You can tell if you hit a vacuum leak because the engine will change the way it runs (idles smooths out, etc.).

I also wouldn't mind taking a look at it. I run MCs on all my Jeeps. They are great carburetors, and really aren't hard to get running right.

I can also probably hook you up with another 1.08 for cheap if that one does have something majorly wrong with it.