Re: Stewart's 1955 Packard 400

Posted by d c On 2021/7/4 18:17:15

Mmm. Sounds fishy. Water should flow through the core just by gravity(pouring). Either it’s clogged or has been plugged intentionally. This is not the way to test for leak. If water has been verified to flow pouring through, the unit would have a plug on one end and the other a hose adapter(s) attached where pressurized air from your compressor (low press) about 10-12 lb applied and the unit submerged in a lg plastic storage bin filled with water. This is in fact the way radiator shops tested whole rads for leaks-in their lg tank. Good luck.