Radiator Pressure Tester Found an Unknown Leak

Found an unknown leak. I was just trying to see if the pressure was going to blow the hose off the upper radiator. Well come to find out we find a leak that only would leak under pressure as my garage floor has always been dry of coolant. That is until we put pressure to it.

Generic Auto Cooling System Radiator Color Cap Pressure Tester Kit Pump Gauge Adapter HD
https://www.amazon.com/dp/B0158CAGS0/?ref=exp_2lateiwonorganizedchaos_dp_vv_d

Tools in the shop
https://www.amazon.com/shop/2lateiwonorganizedchaos

Видео Radiator Pressure Tester Found an Unknown Leak канала 2LateIWon