Installed my Bc Racing coils on Friday and everything went well, but I am constantly hearing a loud popping sound when I drive slowly over uneven pavement, when I go over speed bumps, and when I drive up driveways. Does anyone know why it could be making a sound like I am running over an acorn.

Any insight would be appreciated. Hopefully it is nothing serious and maybe just needs to be tightened.

Thanks in advance

 

sounds like you might have a bad shock, try going back and tightening everything and see if you still have problems. If you do then your best bet is to call BC to see if they can resolve the problem. From what I heard, they are pretty good with customer service

 

Check your spring preload.

The proper way to set preload on a coilover-

-Loosen both lock rings under the spring (spring seat ring(top) and spring lock ring(bottom)) so that the spring is loose and can move up and down slightly.

-Tighten up the spring seat ring so that the spring is snug, but do not tighten it down past simply holding the spring snug, this will be "0" preload.

-Now bring the bottom lock ring up so that it is just touching the spring seat ring, but do not tighten to lock, you will be moving the spring seat ring next.

-Now tighten up the spring seat ring so that you are now preloading (compressing) the spring.

-Measure the distance between the bottom ring and the top ring as you are tightening, once there is a 3mm gap between the two rings, you have 3mm of preload on the spring.

-Tighten up the lock ring to lock your preload in place

-Repeat for all 4 corners.


You also want to check and make sure the top 17mm center nut is tight, it's best to check it with an impact gun if you have access to one, a wuick hit is all it should need. A few other areas to check are the lower mounting bolts, the 4 allen bolts that adjust camber, and the 4 lock bolts underneath the pillowball bearing, make sure all of these are tight.

Sometimes noise can come from somehwere else, endlinks, swaybars, and chassis contact can all be problems. Make sure now that the car is lowered and stiffer that you don't have exhaust contact anywhere. These are all common noise issues.

 

^I agree, incorrectly seated spring probably.

 

Can this cause a problem if left alone for a couple days? I have a busy week and won't be able to get to it until the weekend.

 

I don't see how...its an annoyance if anything.

 

Just figured it out I think. One of my sway bar end links wasn't tightened all the way. I don't have the tools with me up in Tally tho : / So I'm going to have to stop at a bodyshop sometime tomorrow. Hopefully I didn't bend it by driving 500 miles this past weekend.

 

Was that the issue? When I installed my springs the top lock nut on the front strut was just a small turn loose and it made a sound like you are describing.

 

Yepppp. Tightened it up and clunking sound went away.