Well about 2 weeks ago I took off reinstalled the plenum, and I swear I hear a vacuum leak but I don't seem to be having any issues whatsoever idling or accelerating. I can't seem to find the leak either.

It could just be my mind playing tricks on me. As said earlier I'm not having issues with anything, if it is a leak I'd assume it'd be a very minor one. My question is, if it is indeed a vacuum leak and it is not repaired can it cause harm to my engine over time?

I feel really dumb posting this thread when I have no apparent issues, but it's one of those things that will drive me nuts.

Thanks.

 

Have you tried spraying carb cleaner on intake elements while idling?
I don't think it will damage your engine. It just won't be as efficient as it is normally. Better wait for some expert from this message board.

 

You can smoke test it to see if you really do.