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Old 07-22-2007, 04:37 PM   #1
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backfire 1987

i have 1987 with a 6 in it and i have changed the fule pump the coil , cap ,roter, wires, the cat and the fule filter but still will only start when let of on the key and the will only idel after that it will fall on its face an start backfiring ??????i need help
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Old 07-22-2007, 06:59 PM   #2
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could it be a vacunm leak

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Old 07-23-2007, 11:27 AM   #3
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The carb's on these Jeeps are notoriously bad. That is the first place I would look. They develop vaccuum leaks in the carb itself. Someone here posted an article on this carb here a while back. That might give you some good tips to try.
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