MC2150 + HEI Upgrade Makes Moose Happy - Page 4 - JeepForum.com
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post #46 of 94 Old 06-19-2006, 07:12 AM Thread Starter
atomicmoose
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Still have very high idle!

I think I need some direction on the fast idle cam. I was adjusting what I thought it was, but not much seemed to change. I don't think I am dealing with a vacuum leak as I pretty much capped everything off except PCV and vac advance to the dist. I found a post by drexelsteve (I think that is his name) and it helped a TON! Thanks!

I just need some guidance on the fast idle cam. Can someone snap a picture of it for me, and give me some direction? Much appreciated!

Oh, and wraithyjeep... I can't seem to find that diagram you posted. Any help there would be nice as well.

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post #47 of 94 Old 06-20-2006, 10:52 AM Thread Starter
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Here are a few pics of the progress.

Dirty old Carter:


Test Fit for the gasket:


Test fit for the adapter:


My new baby:



Everything test fitted and ready to rock:


Before the manual choke install:


Where is the fast idle cam in that pic?
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post #48 of 94 Old 06-20-2006, 10:58 AM
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can't see it in the pic
I do see the choke blade adjusting bolt
it is out of site behind the choke thermomatic housing the big round thing in the last picture.

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post #49 of 94 Old 06-20-2006, 11:02 AM Thread Starter
atomicmoose
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Quote:
Originally Posted by wraithyjeep
can't see it in the pic
I do see the choke blade adjusting bolt
it is out of site behind the choke thermomatic housing the big round thing in the last picture.
Ok, then I think I know what it is....on the back of that housing there is a screw with a spring on it. I backed it all the way out...without removing it and she still idles really high!

Any other ideas?
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post #50 of 94 Old 06-20-2006, 11:15 AM
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push down on the little bolt ya see in that pic between the carb and choke spring housing when it is running see if that drops it.

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post #51 of 94 Old 06-20-2006, 11:20 AM Thread Starter
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Quote:
Originally Posted by wraithyjeep
push down on the little bolt ya see in that pic between the carb and choke spring housing when it is running see if that drops it.
Ok, I will try that once I get home.

What does that do?
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post #52 of 94 Old 06-20-2006, 11:28 AM
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thats part of your high idle
this will see if it is binding form there you can figure out why if that is the problem.
there may be a port arounf the back side of the carb half way up the body check to see that that is capped

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post #53 of 94 Old 06-20-2006, 11:29 AM
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also try pushing against the throttle lever to obtain a lower idle it appears you throttle spring has no tension on it perhaps the thottle isn't all the way closed.

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89 YJ, 4.2, 5 speed, 2" lift, 235 75 r 15 M/T. CRT's HEI, MC2150 1.08, OBA, 120V inverter. removable Light bar, 10 hella lamps, trail rack w/ jerry cans, champion winch, high lift jack, C.B., lined tub. H4 Conversion headlamps, reveiw mirror w map lights. royal blue with matching trailer.

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post #54 of 94 Old 06-20-2006, 12:03 PM Thread Starter
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Quote:
Originally Posted by wraithyjeep
thats part of your high idle
this will see if it is binding form there you can figure out why if that is the problem.
there may be a port arounf the back side of the carb half way up the body check to see that that is capped
On the Choke housing? there is a threaded hole there...not sure what it is. All vacuum ports on the back are capped or used.

I will double check though.
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post #55 of 94 Old 06-20-2006, 12:04 PM Thread Starter
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Quote:
Originally Posted by wraithyjeep
also try pushing against the throttle lever to obtain a lower idle it appears you throttle spring has no tension on it perhaps the thottle isn't all the way closed.
That pic was before I adjusted the linkage....there is tension now and I have tried pulling back on it. I have also started the engine without the linkage hooked up just as a test.
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post #56 of 94 Old 06-20-2006, 12:22 PM
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are you sure the thottle blades at idle are are fully closed no light should pass through. i find that sometimes if not put on with a little though they bind and leave a gap in the closed position of which there should be none.

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post #57 of 94 Old 06-20-2006, 12:25 PM Thread Starter
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Quote:
Originally Posted by wraithyjeep
are you sure the thottle blades at idle are are fully closed no light should pass through. i find that sometimes if not put on with a little though they bind and leave a gap in the closed position of which there should be none.
I will check that as well. I guess a flash light would work for this trick?
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post #58 of 94 Old 06-20-2006, 12:29 PM
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Quote:
Originally Posted by atomicmoose
I will check that as well. I guess a flash light would work for this trick?
i held mine up to the sun
took a shower in gasoline

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post #59 of 94 Old 06-20-2006, 12:32 PM
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I dont see any mention of you resetting your timming after the HEI install. This may be part of your idle problem.

Its not a jeep if it dont have 4wd.
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post #60 of 94 Old 06-20-2006, 12:39 PM Thread Starter
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Quote:
Originally Posted by pushead
I dont see any mention of you resetting your timming after the HEI install. This may be part of your idle problem.
Didn't install the HEI yet. I was wanting to only do one upgrade at a time. Once I get the carb running right, I will do the HEI.

It is a methodology I have from working with computers. That way, I can pinpoint problems better.
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