Question about 1993 Jeep Wrangler

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Backfire thru tailpipe

We have a 1993 Jeep Wrangler 4.0L 5 speed that makes a backfiring (a small popping) out of the tailpipe when you let off the accelerator. It used to make a big backfire but we changed out the O2 sensor in the manifold and it has decreased substantially but it is still not totally gone. Any other suggestions?

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Have you checked your spark plugs and distrubratercap make sure that all your plugs are calibrated to your mfg. spefications, it seems that you may have a little timing problem also

Posted on Jul 19, 2009

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