Terrible rattle in my leaf springs

fordraptorfans · Apr 19, 2015

We have tried everything to kill this rattle. When the shocks are out there is no rattle at all. Even went so far as to get the beds off. Does anyone have any experience with this?

All roads lead to the leaf springs but bit confused why when the shocks are off the leaf so not rattle. .

These are Deaver + springs
Is there any fix or way to test ?

SilverBack · Apr 19, 2015

Now if you take the shocks out and the rattle stops why don't you think the rattle is in the shock?

Huck · Apr 19, 2015

If you upgraded to 3.0 that noise would be the tappets opening and closing

phydough · Apr 20, 2015

When the shocks are off the truck, can you compress them? Do they stay compressed like the upper one in photo below? If so, the rattle may be shock related.

fordraptorfans · Apr 21, 2015

hi there. I already replaced the upper and lower "bearings" where the shocks connect.
Shocks were pretty recently rebuilt also

---------- Post added at 11:05 AM ---------- Previous post was at 11:03 AM ----------

Huck said:
If you upgraded to 3.0 that noise would be the tappets opening and closing

Not sure what you mean? I have KING 3.0 Rear Bypass Shocks

Huck · Apr 21, 2015

I said tappets not bearings. Tappets are the valves inside the shock

fordraptorfans · Apr 21, 2015

Ya I dont know what those are. ( tappets ) just telling you what I have already replaced. The bearings were pretty worn and loose

TheJoker · Apr 21, 2015

fordraptorfans said:
Ya I dont know what those are. ( tappets ) just telling you what I have already replaced. The bearings were pretty worn and loose

Basically what Huck is saying, is that bypass shocks have (check) valves which are called tappets. As these tappets open and close, they make a noise similar to what you are experiencing. While this may be annoying, it is normal for this type of shock.

If you have no rattle while the shocks are off, then common sense would say that the rattle is actually the tappets within the shocks.

Huck · Apr 21, 2015

To confirm, Run the adjustment screws all the way in to "close" the bypass. Then go drive it, it will be stiff as hell, but it wont make any noise.

Then if you back them out to your original settings, they will make noise.

this is just them opening and closing at a high rate, it can get irritating, but its the price you pay for external bypass.

fordraptorfans · Apr 21, 2015

TheJoker said:
Basically what Huck is saying, is that bypass shocks have (check) valves which are called tappets. As these tappets open and close, they make a noise similar to what you are experiencing. While this may be annoying, it is normal for this type of shock.

If you have no rattle while the shocks are off, then common sense would say that the rattle is actually the tappets within the shocks.

Thank you for the explanation. It has gotten progressively worse.
I was not there that I recall when I got the truck about 8 months ago.

Do you think it could be internal in the shock that needs to be rebuilt?
Short of swapping the leafs to test does anyone have any idea how to check

Terrible rattle in my leaf springs

fordraptorfans

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Huck

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