Hey guys, I have to issues which I cannot figure out.

The first problem I have is ever since I flushed my coolant after my top swap, I can hear some kind of liquid sloshing around from the engine area when accelerating from a stop. The car is not leaking any fluids and all fluids are at the proper levels. Where should I start looking?

My second problem is that every once in a while, when starting the car up, it idles like crap. The car sounds like its cammed. Its very random though and only happends on first start up. Temperature does not make a difference. As soon as you put the car into any gear, it smoothes out and idles fine. Somewhere there is a problem. Can't find any vaccum leaks visiblally. Where do I start?!?!?!

Thanks