When you park your car after driving, and the car is pinging , what is the issue with the car. I know i've read before that it is the excess gasoline burning off the manifold but is this true? what causes this? how can it be damaging to your car?

 

my vi makes a noise at idle, but its that butterfly arm, b/c i can hold the vi open and it goes away, i dont know what pinging you got tho

 

The engine (cooling when turned off) slightly contracts, causing the metallic pinging noise...

 

oh , when car is OFF, lol...my bad

 

my car make noise when i shut it off but i think it's the oil making that tic, tic sound.

 

its all the metal cooling down and contracting, like quicksilver said. however I believe it comes from the exhaust more that it does from the engine.

 

^ Yeah, I've noticed that noise just recently since I had my custom cat-back put on. Only happens during warm up and cool down. I dont think its anything to worry about, just a bit annoying.