MC 2150 problems - JeepForum.com
 
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post #1 of 14 Old 08-16-2013, 08:55 PM Thread Starter
Chase0808
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2001 TJ Wrangler 
 
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MC 2150 problems

I just got the mc2150 and the carb is great but I'm having some issues. I start it by pumping the pedal once, then starting it. Once it is started, I have to keep my foot on the gas to raise the idle, or it will stall. Once it is completely warmed up it runs great. This only happens when starting from cold.

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post #2 of 14 Old 08-16-2013, 09:40 PM
rambo3489
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You have to set the high idle. I do it by pressing my foot to the floor and pulling the choke all the way in. But I have a manual choke on mine. Not sure how it works with an electric choke which is likely what you have on it. But someone will chime in on this.

89 YJ.. My first jeep and I won't let it go. ▀||||▀

Current Project: None... I disgust myself.

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post #3 of 14 Old 08-17-2013, 07:10 AM
Rproject
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The choke setting and high idle setting is on the inboard side of the carb. You need to set your high idle between 1200-1500. Once you set that, you'll be good to go.

Do you have the adjustment instructions?

1996 White ZJ
1987 Maroon YJ (sideways build)
1996 Forest Green XJ

The "sideways" build thread: http://www.jeepforum.com/forum/f22/r...hread-2164793/
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post #4 of 14 Old 08-17-2013, 08:30 AM Thread Starter
Chase0808
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I know where it is but I can't seem to find instructions on adjustments. I bought it from the eBay guy and have the file if the installation but didn't see anything about the high idle.
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post #5 of 14 Old 08-17-2013, 09:10 AM
Rproject
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OK. Let me find it when I get home this afternoon. Doing some trail maintenance this morning.

1996 White ZJ
1987 Maroon YJ (sideways build)
1996 Forest Green XJ

The "sideways" build thread: http://www.jeepforum.com/forum/f22/r...hread-2164793/
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post #6 of 14 Old 08-24-2013, 11:11 PM
ReDinTX
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1990 YJ Wrangler 
 
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Did you find the instructions? I have same issue.

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-ReD
Fire Lieutenant/Paramedic
San Antonio, Tx
'90 Yj 4.2L 5spd
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post #7 of 14 Old 08-24-2013, 11:17 PM Thread Starter
Chase0808
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Quote:
Originally Posted by ReDinTX
Did you find the instructions? I have same issue.

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I just replaced all the vacuum lines and that seemed to do the trick. I still need to change my manifold gasket which causes a little bit of a rough idle. I suggest starting by replacing all vacuum lines.

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post #8 of 14 Old 08-25-2013, 08:11 AM
ReDinTX
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Will do. While im at it, can I remove some of the emissions vac lines? I guess, what all is REQUIRED to have vacuum?

Vac canister
brakes
axle motor
heater
carb
dizzy

what else?

-ReD
Fire Lieutenant/Paramedic
San Antonio, Tx
'90 Yj 4.2L 5spd
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post #9 of 14 Old 08-25-2013, 08:54 AM Thread Starter
Chase0808
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I've heard that you can just run off of 2 vacuum Lina but I've never tried. Mine is and 88 and no longer needs to pass emissions so I'll let you know if I try it out.

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post #10 of 14 Old 11-24-2013, 11:06 AM
ReDinTX
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Quote:
Originally Posted by Chase0808 View Post
I've heard that you can just run off of 2 vacuum Lina but I've never tried. Mine is and 88 and no longer needs to pass emissions so I'll let you know if I try it out.

Sent from my YJ
any luck?

-ReD
Fire Lieutenant/Paramedic
San Antonio, Tx
'90 Yj 4.2L 5spd
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post #11 of 14 Old 11-24-2013, 11:40 AM Thread Starter
Chase0808
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I didn't end up trying it but I'm really considering a fuel injection swap. The only thing holding me back is the fact that the kit costs $1200. I've heard nothing but good about them so that's what I'm going to try. It's the Howell fuel injection kit if you're interested.

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post #12 of 14 Old 11-25-2013, 07:53 AM
Old4X
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Quote:
Originally Posted by ReDinTX View Post
Will do. While im at it, can I remove some of the emissions vac lines? I guess, what all is REQUIRED to have vacuum?

Vac canister
brakes
axle motor
heater
carb
dizzy

what else?

Also need the evap canister, PCV, and EGR system

418 miles on 19 gallons of gas. Can't beat the BBD !
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post #13 of 14 Old 11-28-2013, 12:32 PM
krazybob
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1988 YJ Wrangler 
 
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Quote:
Originally Posted by Chase0808 View Post
I've heard that you can just run off of 2 vacuum Lina but I've never tried. Mine is and 88 and no longer needs to pass emissions so I'll let you know if I try it out.

Sent from my YJ
Never heard anything about an '88 model not having to pass emissions. is that a standard law everywhere, or just your state ? I'd love to delete all the emission stuff if possible. My county in my state of Idaho, does not require any Smog tests, but other counties do, and if I decided to sell my '88, it may limit me to where I could sell it. Maybe I'd better check my Idaho laws :-)

Krazybob,, Mtn. Home, Idaho
My goal, is to die young,,
at a very old age
1988 YJ 4.2 5sp
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post #14 of 14 Old 11-28-2013, 02:17 PM
Rproject
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Quote:
Originally Posted by krazybob View Post

Never heard anything about an '88 model not having to pass emissions. is that a standard law everywhere, or just your state ? I'd love to delete all the emission stuff if possible. My county in my state of Idaho, does not require any Smog tests, but other counties do, and if I decided to sell my '88, it may limit me to where I could sell it. Maybe I'd better check my Idaho laws :-)
Emissions testing is very much dictated by age and location. If we lived 3 miles east, our '95 would have needed to be tested. In IL, our '87 is considered too old and doesn't need to be tested anywhere in the state.

1996 White ZJ
1987 Maroon YJ (sideways build)
1996 Forest Green XJ

The "sideways" build thread: http://www.jeepforum.com/forum/f22/r...hread-2164793/
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