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Feb 12, 2006 | 12:28 PM

#16

jtharvey

Lead Driver

Joined: Oct 2004

Posts: 7,413

Likes: 1

From: Columbia, MO

I've got a very similar noise, and I've isolated it to the leaf springs on the front passenger side. I don't have a lift, but just a front leveling kit. When the springs get dry and a little rust between them, it's my thought that they start rubbing against each other and make a knocking or popping sound. If I spray some penetrating oil on the springs, being sure to get it between the springs the best I can, the noise usually goes a way for a couple of months until the sprins dry out again. May not be your problem, but it's worth a check.

Feb 12, 2006 | 12:44 PM

#17

zx250

Thread Starter

Of the next Riffraff East

Joined: Oct 2004

Posts: 8,679

Likes: 2

From: Concord NC

Does the dry springs cause a knocking sound? Mine is a leveling kit with leaf springs.

Feb 12, 2006 | 01:34 PM

#18

jtharvey

Lead Driver

Joined: Oct 2004

Posts: 7,413

Likes: 1

From: Columbia, MO

Yeah, I'd say that's it. That's the exact same thing that I have. Try some lube on the leaf springs and see if that doesn't help. Cheap and easy to at least try.

Feb 12, 2006 | 02:34 PM

#19

bloomy63

Senior User

Joined: Jul 2005

Posts: 285

Likes: 0

From: York, PA

check the sway bar and drop link bushings

Feb 12, 2006 | 03:22 PM

#20

zx250

Thread Starter

Of the next Riffraff East

Joined: Oct 2004

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From: Concord NC

I have replaced my bushings on my sway bar with polyurethane bushings at the same time I lifted the front. Could this be a problem?

Feb 12, 2006 | 04:19 PM

#21

bloomy63

Senior User

Joined: Jul 2005

Posts: 285

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From: York, PA

poly bushings are good imo.
have you replaced the bushings on the drop links?, it's the bar at either end of the sway bar that attaches the sway bar to the frame?

Feb 12, 2006 | 04:27 PM

#22

zx250

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Of the next Riffraff East

Joined: Oct 2004

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From: Concord NC

Yes, I have replaced all except the ones on the axle that holds the sway bar. I can't find the right size. The ones I ordered were suppose to be right. The are a 1/4" to small dia.

Feb 12, 2006 | 05:11 PM

#23

bloomy63

Senior User

Joined: Jul 2005

Posts: 285

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From: York, PA

in my experience the bushings on the sway bar against the axle will rattle and make a noise like you are describing, it depends how worn they are. I ordered my poly bushings from jegs, i think they were energy suspension and i had no problems with size. but i know that ford has used many different configurations for the sway bar on these trucks.
change those bushings and it might solve your problem