New Fenton intake leaks through heat riser
"When coolant is run through the heating space on the bottom, it is sucked rapidly into the intake, cylinders, what a mess."
joethehuman most likely has a Fenton dual carb intake to which he attached a heating plate plumbed to coolant water. The coolant leaked into the intake passage to one or both carbs.
Sounds bad. repair/replace?
This is another reason for not using coolant heat.
(besides it being slower to warm up than exhaust heat, and being an opportunity for coolant leaks at joints or damaged hoses).