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If it has the notoriously bad Carter BBD carb, you can remove the venturi's and drill them out as they have a tendency to plug up. A webiste that has the blow by blow info on how to perform this is http://rubicon.off-road.com/Jeep/tech/engine/carter.html. It is rather easy to do and will help to keep the venturi's from pluggin ing hte future.

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Q: How do you fix the Idle problem on a 1989 wrangler carb?
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