1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Small leak on bottom of radiator 79 gs.

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Old 04-09-15, 09:47 PM
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I am 99% positive it is not coming from any hose i felt it coming from under the pipe it wasn't beading down from somewhere else. I used paper towels to see where it was coming from and there was no leak coming out of the hoses it was only leaking from that one lower pipe.
Old 07-09-15, 11:28 AM
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Hi just thought i would bump this thread i need the cooling system operating pressure to test my leak does anyone know it i tried looking at both my manuals but i could find it thank you.
Old 07-09-15, 01:12 PM
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I think you need to replace the hoses first regardless if they are the cause or not. If the new hose(s) don't fix it, just go buy a new radiator. Getting the current one fixed will cost half the cost of a new one.

Spectra Premium CU701 - Radiator | O'Reilly Auto Parts
Old 07-09-15, 01:28 PM
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They are new flexible hoses. So i should just replace it and not try to fix it?
Old 07-09-15, 07:04 PM
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Originally Posted by thecody59
Hi just thought i would bump this thread i need the cooling system operating pressure to test my leak does anyone know it i tried looking at both my manuals but i could find it thank you.
Pump the pressure up to like 10 or so pounds... it'll leak. If it is leaking at 0 pressure 10 will make it squirt.
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