Hi all I just changed my water pump, all went well except I have what appears to a coolant leak from nowhere. I checked last night with a UV light nothing anywhere other than what shows in the images.

Paper towel under the lower rad hose area came up dry
Hard line on the top of the rad dry
Coolant bottle and associated hoses appears ok
It has been 2 days of hot weather, so although I suspect coolant in the frame anywhere else to check ?


Where the drip is


Nothing to rear beyond this

 

Maybe from a puddle that formed during the pump removal?

 

That part of the frame is under the radiator. Bottom hose is dry all the way from WP to rad? Did you put rtv on the wp bolts?

 

@Extinct thanks for the feedback,

Yes I RTV'd the bolts, no moisture anywhere on the passenger side hoses or fluorescent dye traces. Checked the drivers side as well.
The leak has slowed, and seems to be isolated to the area directedly above the bushing and bottom of the frame only.

I used the old fashioned way to check for moisture a handful of toilet paper

 

So maybe radiator end caps are weeping. Those leaks can travel a good distance. Sometimes you can peer down there through a hole with a skinny flashlight.

 

@JohnZo good suggestion I thought of that,but the location is wierd and there is no fluorescent green on the tank ends under UV light. I will monitor for a few days, it is far less today than yesterday, and the system holds pressure over night

 

I changed my thermostat and hoses and managed to spill coolant all over. I cleaned everything up good (I thought) but I had coolant showing up in the same place as yours and I also thought I had a leak somewhere. But after running for a while it disappeared.
My thought is that there is somewhere on the frame that holds a puddle of coolant and it doesn't show up until the fan or airflow from driving blows it off just to worry you! Mine didn't come back and probably yours won't either. Just a LR way of snickering at us maybe? 😆

 

@Diesel Gypsy I think that is the case too, but you know aluminum engine and coolant leaks go together like the titanic and icebergs , so I am a bit obsessive about those.