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Unread 08-24-2013, 02:42 AM   #1
kgb_m3
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MC2100/2150 bare vacuum lines

Was doing some maintenance last night and discovered a vacuum line mess at the charcoal canister. One ripped line and 3 going to incorrect location. I'm running MC2150, nutter bypass and TFi ignition upgrade. Have a trip lined up in a few days and need Jeep running right.

Could someone please post absolute bare minimum way to run the MC carb. I would like to delete the canister out of equation till I get back and buy new vacuum hoses. Then connect everything right. For now what can I do to delete the can? I can't seem to find any diagrams that bypass the canister.

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Unread 08-24-2013, 05:33 AM   #2
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My canister was out of the equation before I got mine, I actually - somewhat - brought it back after the 2150 swap.

The purpose is supposed to be to collect excess fuel vapors and return them to the tank. All my lines were missing. I connected the vent line on the front of the 2150 to the canister just so I wouldn't have any fuel spill out while off camber. Other than that, I have nothing connected to my canister.
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Unread 08-24-2013, 09:05 AM   #3
kgb_m3
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I see what you're saying. However for now I just want to bypass the can and run only 2 or 3 lines needed to run the truck. I'm assuming those would be brake booster, PCV and distributor. Am I missing anything? There was a pic of minimum vacuum line configuration for MC carb, can't seem to find it...
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Unread 08-24-2013, 09:40 AM   #4
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theres a diagram in this thread, just eliminate what you don't need.
http://www.jeep-cj.com/forums/f2/210...-1-14-a-16682/
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Unread 08-24-2013, 11:22 AM   #5
jojojeep1
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I have one vac line going to the vac advance and that's it , I pluged off the rest of the carb and you can balance a dime on my air filter that's how nice the jeep runs.
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Unread 08-24-2013, 05:30 PM   #6
kgb_m3
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^^ That's what I want to do as well. Couple of things though, what did you do with your PCV valve? What about carb bowl vent tube, it used to go to canister, do i plug it or leave it open?
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Unread 08-24-2013, 05:45 PM   #7
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Quote:
Originally Posted by kgb_m3 View Post
^^ That's what I want to do as well. Couple of things though, what did you do with your PCV valve? What about carb bowl vent tube, it used to go to canister, do i plug it or leave it open?
I did the same thing. Vac advance & 1 line to the canister for the vent. Everything else is capped.
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Unread 08-24-2013, 07:55 PM   #8
kgb_m3
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Here's what I got now and it runs great!

PCV going to intake manifold. Distributor to carb. Brake booster to manifold. Carb vent and EGR valve left open. That's it and it runs great. Canister is completely deleted and everything else is capped off.
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Unread 08-27-2013, 01:07 PM   #9
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Quote:
Originally Posted by kgb_m3 View Post
I see what you're saying. However for now I just want to bypass the can and run only 2 or 3 lines needed to run the truck. I'm assuming those would be brake booster, PCV and distributor. Am I missing anything? There was a pic of minimum vacuum line configuration for MC carb, can't seem to find it...
Front lockup?
That's the only 4 I'm running right now. The tank vent and carb vent both go to the canister but activating line from the carb softened and broke so I just capped it. I know I have to replace it eventually or the canister will get soaked.
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Unread 08-27-2013, 03:00 PM   #10
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Quote:
Originally Posted by vadslram View Post

Front lockup?
That's the only 4 I'm running right now. The tank vent and carb vent both go to the canister but activating line from the carb softened and broke so I just capped it. I know I have to replace it eventually or the canister will get soaked.
I capped that line at first as well, but my mechanic buddy told me it had to vent, so I ran it to the canister. It's the only thing connected to the canister.
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Unread 08-27-2013, 06:19 PM   #11
kgb_m3
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Front lockup is manual cable. Vacuum lock failed long time ago.
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