I have a strong smell of burnt gas or oil coming out of the exhaust .Also it idles rlly low. Im thinkin I need new fuel injectors but what do I know it could be a blown header. Anyone have other reasons?

really going to need more information to give more suggestions. what bike is it?, how many miles are on it? how does it run while driving? .ect.

if its idling low, you can always turn the idle up with the idle adjustement.