So you had them remove the factory parts and install coil over assemblies and put the factory parts in storage. Then the same shop reversed the process and put the original parts back on, correct?
I doubt it had anything to do with the installation. Most shops treat "customer supplied" parts the same way. You bring them in, they install what you brought.
It is more likely it is just a failure, either internal valving or a bad seal. I have seen new parts that did not work right out of the box. It is even possible that while the parts were in storage the piston rod received a ding or even was already defective.
Thursday, May 17th, 2018 AT 5:47 PM