Coolant Overflow Problems

[SteveH978]

I apologize if this is a repeat or posted in the wrong place but I have a very unique problem, and wanted some input before I dump money in parts.

I have a 2010 Ford Explorer with approx 164k miles on it. 2 years ago it overheated on me and I had my mechanic look at it, and tell me it was a radiator housing. That was replaced and no issues up until recently. I am now going through coolant daily and it’s spraying into the engine bay, yet no overheating. You’d think with coolant leaking at this rapid rate, you’d see it around the radiator or the ground but no visible leaks. 2 days ago it’s throwing cylinder 3 misfiring. Thoughts on if these are related or where the coolant could be going? I was going to replace the radiator and spark plugs this weekend but thought I should get some input before wasting money.

 

[974X4BLACKSPORT]

You need open the hood and look at where the coolant is coming from. It could be a loose hose clamp, or a coolant hose could have a small hole in it. A for your misfire, if coolant gets on the ignition wires (spark plug leads or C.O.P.), it could cause a misfire when wet.
First things first, warm up the engine good and hot, shut off the engine and get under the hood with a flash light and a little mirror (to see behind things) and look for coolant, look at all the hoses and clamp connections, thermostat housing, heater control valve, radiator tanks, overflow tank, pay extra attention around the cylinder number 3 spark plug area.

 

[SteveH978]

You need open the hood and look at where the coolant is coming from. It could be a loose hose clamp, or a coolant hose could have a small hole in it. A for your misfire, if coolant gets on the ignition wires (spark plug leads or C.O.P.), it could cause a misfire when wet.
First things first, warm up the engine good and hot, shut off the engine and get under the hood with a flash light and a little mirror (to see behind things) and look for coolant, look at all the hoses and clamp connections, thermostat housing, heater control valve, radiator tanks, overflow tank, pay extra attention around the cylinder number 3 spark plug area.

I was looking all around the radiator area last weekend but was shocked to see nothing dripping, my next effort was to do the same with a UV flashlight. However if it’s dried I’m assuming it won’t “glow,” unless the source is actively leaking. I’ll dig deeper down with hoses and see if any clamps or hoses have hoses, cause that would be a lot cheaper than a radiator.