Question about 1990 Jeep Wrangler

1 Answer

Friend installed reman carb on his 90 wrangler. I just finished routing vac lines that he couldn't remember where they went but manual has no adjustment info. Lokking for help with adjustments for carb and choke.

Posted by on

  • dojodavis May 29, 2010

    very helpful, definetly saved me some aggravation



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 4,472 Answers

On side of the carb is the idle adjustment screw. As far as the choke that shouldn't need adjustment if it's hooked up properly. Start by taking off the air cleaner to provide good access, now with the engine cold, move the throttle at the carburetor lever all the way to full open, or full throttle. You should see a flapper valve close over the top of the carburetor, this is the choke plate, does it close? Hope this information helps you. If you still have questions let me know. Also to confirm what engine is in the vehicle? I am assuming the 6 cyl.
Thank you,

Posted on May 28, 2010

  • 1 more comment 
  • dojodavis May 28, 2010

    lee, Thanks for info but when you say idle adjustment screw there are 3 screws one looks like it's for the choke linkage then there's one next to it that just tightens on carb body then there's one that has a cylinder(vac operated) which I'm assuming is ajdustment for high idle? Do you have to tune all to work together. Thanks again, DON

  • dojodavis May 28, 2010

    Sorry, it is 6 cyl.

  • Lee A.
    Lee A. May 28, 2010

    Then the information I gave you applies. It's all pretty straight forward let me know if you have any other questions.
    Thank you,



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Vacum lines 90 geo storm

Most GM cars have a vacum routing diagram on the under side of the hood if not the library may have a repaire manuel you could look at and get copys

Jul 21, 2012 | Geo Storm Cars & Trucks

1 Answer

Hard 1-2 shift

Look for correct vac hose routing. Is the shift late, also? does your vehicle have cable downshift, look at it's adjustment..

May 30, 2010 | 1999 GMC Suburban

1 Answer

Need route for 97 jeep 2.5 w/ac serpentine belt

1997 JEEP WRANGLER - L4 2.5L 150ci GAS FI N P
Belt Routing Diagram Multiple Accessory, w/A.C.


More details in DAYCO Catalog

I hope help you woth this (remember rated this help).

Sep 27, 2009 | 1997 Jeep Wrangler

1 Answer

Vacuum Diagrams

Visit (free register); in there you can find the repoair guide about Jeep Wrangler and more details, like VacuumDiagrams...


Fig. 1: Emission control vacuum schematic-1987-90 with 4.2L engine and automatic transmission


Fig. 2: Emission control vacuum schematic-1987-90 with 4.2L engine and manual transmission

I hope help you with this. Good luck (remember rated this help).

Sep 24, 2009 | 1990 Jeep Wrangler

1 Answer

Do you have a image of how to put the drive belt back on a jeep wrangle 1997

1997 JEEP WRANGLER - L4 2.5L 150ci GAS FI N P

* Belt Routing Diagram Multiple Accessory, w/o P.S., w/o A.C.

* Belt Routing Diagram Multiple Accessory, w/P.S., w/o A.C.

* Belt Routing Diagram Multiple Accessory, w/A.C.

1997 JEEP WRANGLER - L6 4.0L 242ci GAS FI N S

* Belt Routing Diagram Multiple Accessory, w/o A.C.

* Belt Routing Diagram Multiple Accessory, w A.C.

For more details, you can visit DAYCO Catalog

I hope help you with this. Good luck (remember rated this help).

Sep 18, 2009 | 1997 Jeep Wrangler

1 Answer

Dont know how to hook up carb

Hello, the best advice I can give for this is to mark your old vacuum lines off the careburator and match them with your new one. A good Chiltons or Haynes Auto Manual can help you in this endeavor as well. Being a mechanic doing upgrades to your vehicle does not always have the manual for the conversion in which you are doing so some good ole guess and tell may be the route to take. Just remember that you need vaccum to take and take out air into the careburator and this is a good start from any careburator upgrade. I have rebuilt and installed probaly 50 careburators and a manual for converting one careburator from one vehicle or motor can take longer than some just good time with your motor figuring out what needs to get done. Thank You

May 20, 2009 | 1981 Ford Bronco

1 Answer

22r Carb. misses at ide

Dripping fuel could indicate a badly adjusted float,bad needle and seat,or possibly to much fuel pressure off the pump,if your using a mechanical fuel pump make sure the return line to the gas tank isn't plugged,if your usining an electric fuel pump make sure you have a working pressure regulator,my personal opinion on remanufactred stock carbs isn't very high,if you can return the carb I would highly reccomend replacing it with a Weber 38 DGES,you can get a Toyota conversion kit for around the same cost as a remaned stock carb.

Apr 03, 2009 | 1988 Toyota Pickup

1 Answer

1988 jeep wrangler carb trouble

Ok... If you have any experience with carbs, you can get a rebuild kit. The most important part of any rebuild is to clean out obstructions in the passageways. Most times this can be done by using carb cleaner and spraying compressed air through them.Most times, just spraying cleaner into carb while installed is a waste of time as debris usually consists mainly of fine rust particles from inside the fuel tank, which will remain in the fuel bowl unless physically removed. If you can't do this, next best option is to search local junkyards for a similar unit. When replacing, cut the fuel line in a convenient place ahead of the carb inlet and put an aftermarket filter in the line, to prevent debris from re-entering and causing further problems. Most carbs have the adjustments blocked off. before using, it is wise to have someone who knows how to remove those plugs, do this for you so you can adjust it after installed.
Good luck

Jan 25, 2009 | 1988 Jeep Wrangler

1 Answer

Vacuum lines for an 1983 GMC CABALLERO with 229 V6

nice choice of rod, but the v 6, junk , need to run untill 454,350, 396 arrive? cool, ok. only need dist vac to accelerater vac port pass side of carb,manifold vac port to brake boost lose rest.cap off.<check timing> racing trick, vac guage max vac back off 2 lbs of vac perfect timing for race. set wreckers up that way for clean burn and better milage. or classic roadside services .com e-mail rick v-6 231 229 vega/monza

May 18, 2008 | 1986 GMC Caballero

Not finding what you are looking for?
1990 Jeep Wrangler Logo

Related Topics:

42 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides