Loud Creaking After Ford Perf Drop

[Espi5.0]

Hey Everyone - had my ford performance lowering klt installed a couple months ago on my 2023 Screw. Initially everything was quiet. However, over the last few weeks there is this very loud creaking/popping type noise coming from the rear. Based on some quick research, it sounds like the culprit may be not enough grease on the shackle bushing. Wondering if others have encountered this.

The sound doesn't happen when I bounce the truck side to side on the steps. Is most noticeable when coming to a stop/leaving a red light or going slow around a corner. I ordered some lithium spray grease and plan to spray the shit out of the shackles to see if that helps. Any other ideas?

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[mredwin25]

did you grease the bushings throughly before installing? if not that’s your problem right there, try spraying a liquid lubricant in there, should help

Hey Everyone - had my ford performance lowering klt installed a couple months ago on my 2023 Screw. Initially everything was quiet. However, over the last few weeks there is this very loud creaking/popping type noise coming from the rear. Based on some quick research, it sounds like the culprit may be not enough grease on the shackle bushing. Wondering if others have encountered this.

The sound doesn't happen when I bounce the truck side to side on the steps. Is most noticeable when coming to a stop/leaving a red light or going slow around a corner. I ordered some lithium spray grease and plan to spray the shit out of the shackles to see if that helps. Any other ideas?

 

[Espi5.0]

did you grease the bushings throughly before installing? if not that’s your problem right there, try spraying a liquid lubricant in there, should help

Thanks - installed said they did. I hit the bushings and u bolts with white lithium grease and a lot of the noise seems to have gone away. However, I still hear what sounds like a pop coming from the front. Any idea what I could spray in the front that would have needed grease when the springs were swapped? The other thing I have seen in the forum is the cross member bolts get loose and make some noise, so I’m going to check that but it seems odd at 3k miles on the truck.

 

[Espi5.0]

did you grease the bushings throughly before installing? if not that’s your problem right there, try spraying a liquid lubricant in there, should help

The popping only happens when coming to a stop or taking off from a stop.

 

[SALEEN961]

Poly bushings often require a heavy coating of thick silicone grease to stay quiet. Even when this is done during installation, they will often need to be periodically cleaned and lubricated. The UCAs on my 2014 F150 needed to be removed, cleaned, and lubricated after about 2 years/30K miles.

Loosening the bolts and pumping new grease in through the zerk fitting never did the trick on my UCAs because the grease would never spread out around the bushings thoroughly enough.

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