Is this possible? How can fuel be introduced into the cooling system? I have a 1987 toy 4x4 pu with a 22r carb engne. It's leaking coolant around the tstat housing, underneath the intake, smokin white exhaust. I took the radiator cap off and it smelled like fuel in the water. Not sure where to begin on this one. Truck has approx 193k miles. Thanx for any help.