Looks like I have a leak right under the radiator cap after noticing white smoke and burning smell. I could see bubbling where the neck meets the plate. At first I thought it was just because I had more coolant than necessary but draining some coolant didn't resolve it. I'm also noticing a strong fuel smell coming through the vents while driving although maybe I'm mistaking it for burnt coolant. Anyone have ideas on how to fix or whether something else is wrong?