Too much priming sugar?

Okay so I used 16oz of corn syrup on 5 gallons on what beer. Too much and will my bottles explode if I cap them?

Yeah you used way too much. And Yes, if you cap them they are likely going to explode. I would let it ferment out and re-prime.

How long should I let then go until I can referment them?

Like I said, I would let it completely ferment out. Then re-prime and bottle. Here is an excellent site for bottle conditioning:

http://www.northernbrewer.com/priming-sugar-calculator/

Thanks Josh!! Appreciate The help!