Ok my car definitely makes a different sound when idling after i spray for a while, but then if i like leave my car sit for like a day....the sound goes away...my friend who has automotive degree said it sounds like my valvetrain area but just trying to make sense of it...if it were anything like that, wouldnt my car run differently or bad? its just a light sound that is like a tapping/puffing that goes syncs with the engine turning....but the sound goes away the next day...

 

someone?

 

anyone?!?!?!?!?!!?

 

Well with out hearing the sound or a better description not much to say