Cooling system flush

[SnowDrift]

Has anyone used one of these kits?

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Trying to flush out the rusty water. I have drained and refilled half a dozen times and don't think I am making much progress. Looking for a way to get it done and to stop fooling with it.

Maybe just take it somewhere and pay to have it done?

 

[ak diesel driver]

block off the radiator and heater core and use some muratic acid. It will eat aluminum so be careful

 

[SnowDrift]

It's not that I need to dislodge crud but more that there is still rusty water running around in the system. After the test run, it was several months before it fired up so the water sat in the passages for that long period of time. I didn't realize how nasty it was until I changed the overflow bottle due to the new air filter setup when the brown water came out.

 

[Will L.]

Yup- used that same kit. Hook to the hose- remove the t stat and put housing back on. Hose on and go make a sammich. Come back and fire it up. Drain the swimmin pool man. Once it’s all clear: off engine, off hose, remove lower block drain plugs and turn hose back on. It will get it all

 

[SnowDrift]

Flushed the heck out of it without the thermostat until the water ran clean. The guy i buy parts from loaned me the tool he has. Nicer version of what I linked.