Question About Hard Start Kits

https://troyoivf998.quillnesty.com/posts/comfort-experts-guide-to-indoor-humidity-and-ac-repair-for-north-fort-worth-summers

Question About Hard Start Kits Has anyone added a hard start kit to an older compressor? Ours grunts for a second before it kicks on, and the lights dim. The article mentioned it can help sometimes but won't solve a failing compressor