Source of coolant leak

Input as to where this leak is coming from? Doesn't appear to be the thermostat.

Thanks

http://i63.photobucket.com/albums/h151/livewire1568/IMG_20140421_133443_482.jpg (http://s63.photobucket.com/user/livewire1568/media/IMG_20140421_133443_482.jpg.html)

It's difficult to get a good view with the bright sunlight washing out part of the image, but it looks to me like there is a trickle from the forward thermostat housing stud. If you were to add some UV dye to the cooling system, drive the car for a day or two, then check with a blacklight/UV light in a dark area or at night, you should have good luck pinpointing the leak. You could also find a cooling system pressure tester, pressurize the system, then look for coolant to flow in that area.

-Rod

If its not the thermostat, then its probably coming from the intake gaskets.

Car/engine info would help.

Sorry, it's a 1974 Pontiac Catalina. It'sa 7.5L 455
I just noticed this last night when I got home from driving it (video)


http://i63.photobucket.com/albums/h151/livewire1568/6%20Door/th_VID_20140512_021820_972.jpg (http://i63.photobucket.com/albums/h151/livewire1568/6%20Door/VID_20140512_021820_972.mp4)

That video was taken after I got home and turned the car off. It lasted a good 5+minutes. I'm not sure what that connection/inlet/outlet is used for but the rubber looked pretty worn and cracked. The radiator is less than 2yrs old and the car isn't driven very often.

Thanks

At the beginning of the video it appears there are two hoses that connect to the top of the radiator there, and the lower of the two appears to have a pinhole. But then you try to get a different angle on it and I don't see the second hose.

Please confirm if there are two hoses in that area or just one. If just one, that hose is the de-gas hose that goes to the coolant overflow/recovery tank. If there's another hose just below the de-gas hose, I'm not sure what that would be. The lower radiator hose should come out the bottom of the radiator.

-Rod

Everything was pissing out of here

http://i63.photobucket.com/albums/h151/livewire1568/6%20Door/IMG_20140512_083913_232.jpg (http://s63.photobucket.com/user/livewire1568/media/6%20Door/IMG_20140512_083913_232.jpg.html)

Is this a part that just wore out or is it a sign of some other issue and it was just showed itself at this llocation. The upper and lower radiator hoses are just as new as the radiator. I changed them all less than 2 years ago. The only hose that connects in that part of the radiator is the one to the overflow container.

Thanks

That almost appears to be a very dry rotted plug attached to the radiator. Does it go anywhere, or is it really just a cap/plug? If just a plug, then you probably will be good to go by just replacing that. The pressure cap will allow probably 15psi of pressure in the cooling system when up to temperature so I wouldn't say that the pissing coolant after the cooling system was up to temperature would be indicative an any other issues. But, considering the amount of dry rot on this hose, sealing this leak may just mean the next weakest link will start pissing next.

-Rod

I'm hoping it's just because that plug was rotted but I can't figure out why it is. It's not an old part. It doesn't connect anything so I'll go about changing it. In my first post, it was kind of hard to see but I sometimes show coolant pooling in that area. I still haven't figured out why though someone mentioned the intake gasket. Could this new problem be related to that unsolved issue yet?

Thanks

I'd fix the plug and clean the puddle near the thermostat before getting too concerned about other leaks. With this stream so near the fan, and the thermostat area being a high collection point, it could be that the fan is blowing the pee stream toward the engine and it's puddling near the thermostat housing. If you fix the dry rot and the thermostat area stops getting wet, you've probably solved the issue. If you still end up with a puddle near the thermostat, then intake manifold gaskets are still a possible cause.

-Rod

The new valve looking worn already? Any ideas why?
Thanks



http://i63.photobucket.com/albums/h151/livewire1568/Mobile%20Uploads/IMG_20140615_102843_556.jpg (http://s63.photobucket.com/user/livewire1568/media/Mobile%20Uploads/IMG_20140615_102843_556.jpg.html)