The Ford Barn

denver9 · 05-12-2015, 11:49 AM

I posted these questions under the existing thread "Water flow" a couple of days ago but that probably wasn't the right place to post it as I got no results. Please pardon the redundancy but I am starting this new thread in the hopes of getting better results.

I have a thermostat in my 31 coupe and have no cooling issues UNLESS I run anything else but plain water. In an attempt to clean the rust out I added a can of radiator flush and followed the instructions. That resulted in immediate foaming and overflow at the radiator cap. I still ran the engine for a while at low speed to flush the system. I then drained the radiator and refilled it at least three times before the foaming/overflow would stop.
After I got the foaming to stop I added water pump lubricant. Once again I got the foaming/overflow. Repeated the clear water flush several times and then added anti-freeze ----same foaming/overflow problem.
Anybody have opinions (although I prefer facts) as to why I am having that problem?

Second question: Have any one of you successfully converted to a sealed system? I am running the Snyder's leak less water pump.

05-12-2015, 11:49 AM	#1
denver9 Member Join Date: Mar 2012 Location: Hemet, Ca Posts: 55	Foaming radiator over flow I posted these questions under the existing thread "Water flow" a couple of days ago but that probably wasn't the right place to post it as I got no results. Please pardon the redundancy but I am starting this new thread in the hopes of getting better results. I have a thermostat in my 31 coupe and have no cooling issues UNLESS I run anything else but plain water. In an attempt to clean the rust out I added a can of radiator flush and followed the instructions. That resulted in immediate foaming and overflow at the radiator cap. I still ran the engine for a while at low speed to flush the system. I then drained the radiator and refilled it at least three times before the foaming/overflow would stop. After I got the foaming to stop I added water pump lubricant. Once again I got the foaming/overflow. Repeated the clear water flush several times and then added anti-freeze ----same foaming/overflow problem. Anybody have opinions (although I prefer facts) as to why I am having that problem? Second question: Have any one of you successfully converted to a sealed system? I am running the Snyder's leak less water pump.