Wanted: 82 CJ Vacuum and Emissions Advice - JeepForum.com
 
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post #1 of 6 Old 10-21-2019, 06:53 PM Thread Starter
Jeffncs
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Advice Wanted: 82 CJ Vacuum and Emissions Maps

PO left me with a birds nest of vacuum and emissions tubes. Can anyone link or post clean, simple diagrams of each for me to try figuring out how to get this thing running better? Itís a 258 4.2 that runs super rich and rough.

Iím not opposed to bypassing, replacing, rerouting.... This is an occasional sunny day driver that just needs to be reliable and not stink like exhaust. I canít claim either right now!

- Professional Knucklehead


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Last edited by Jeffncs; 10-21-2019 at 07:06 PM.
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post #2 of 6 Old 10-22-2019, 06:50 AM
Matt1981CJ7
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Here's the 1982 factory vacuum layout for the non-California model.
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post #3 of 6 Old 10-22-2019, 06:55 AM
Matt1981CJ7
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And here's a much simpler layout that has worked well for many of us.

Matt
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post #4 of 6 Old 10-22-2019, 07:42 AM Thread Starter
Jeffncs
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Thank you! I’ll give these a try...

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post #5 of 6 Old 10-23-2019, 01:45 AM
ddawg16
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What is your location? If you are in California, you can't really make mods.

I'm a big fan of fuel injection...solves a lot of problems. But, lacking that route....here are some common problems.

1. Charcoal canister. The activation diaphragm leaks and causes high idle. Do NOT remove the canister. It hurts nothing and absorbs a lot of gas fumes.
2. Cracked rubber. Your jeep is old. Chances are, ALL of the rubber lines are past their time. This includes the gas lines between the tank and hard line. I'd replace them sooner than later. You have three of them.....Gas supply, Gas return and gas tank vent. Any of them can give you a raw gas smell.
3. PCV.
4. Excessive blow by. Look in your air cleaner. If you see a bunch of oil on the filter inside the air cleaner with a hose that goes to the valve cover....you have a tired engine. It's blowing oil back into the air cleaner.
5. BBD Carb not working right.

One of the best mods I made was going to an HEI dist. The all time best mod was going to a FI SBC


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post #6 of 6 Old 10-23-2019, 12:18 PM Thread Starter
Jeffncs
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Location is NC. EFI isn’t an option right now due to cost.

Hoping to dig into the vacuum lines tonight if I can get out of work early enough.

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