Question About Hard Start Kits

https://keeganprxl389.focalledger.com/posts/park-glen-ac-repair-in-north-fort-worth-with-comfort-experts

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