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Old 06-17-2018, 05:04 PM
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RichnSteph's Avatar
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Front end hop just showed up.

Put new u-bolts in last weekend and on the way home from work on Monday I heard and felt something in the front end clicking. Pulled over and "someone" forgot to completely tighten the lug nuts on the front tire. So I tightened them up on the side of the road and then jacked the front end up when I got home to make sure they were tight. No issues.

This morning I re-torqued the U-bolts to 90lbs (I read that number online) and took it for a spin. At 70mph and up there is a hop in the front end. Consistent and increases with speed. No noise that I can hear. I crawled under it and checked everything I could think of and I see nothing that indicates that something should be shaking under there.

To be honest though it might have always had the hop in it and I just didn't notice because the U-bolts that were in there were pretty much shot and the suspension was really loose and noisy.

91 YJ, 4.0, 5 speed, 4x4, 2" lift springs (unknown origin and in pretty sorry shape), 31/10.50/15's


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Old 06-17-2018, 05:07 PM   #2
283 YJ's Avatar
Join Date: Aug 2017
Location: Central Oregon
Posts: 416
From what you describe it sounds like a bad tire. You might rotate them, front to back, and see if the hop moves with the rotation. Tires and wheels can be some strange little fellas.
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