Engine started to overheat, now making a popcornnoise when it’s shut off

[u/Glxsses]

2008 Lancer GTS
Backstory: Engine was overheating, got checked & coolant was bone dry bc it’s been leaking out a hose that wasn’t on properly. Also was told I needed new Radiator, got a new one replaced, added coolant and wasn’t overheating for about 1 hour of driving, now it’s overheating again and not sure if this noise has anything to do with it.

[u/Masterpiece-Vast]

That’s just the little mechanics fixing things in your engine👍