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  1. YJ Tech Forum
    So I'm having some problems with my 1990 Jeep Wrangler. It is a 4.2 liter 6 cylinder. This problem seems to be reoccuring. When accelerating, my jeep will start to jerk/buck. It gets worse when I try to go uphill. Had this problem a couple months ago and it ended up being bad spark plugs and the...
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