Heater Core Flush
- Thread starter Hopper
- Start date
I flush it from both directions several times with the hose to break stuff up. I also put my thumb over the end and release creating a "hydraulic hammer" effect to best l break even more up.
If you are worried about the small'ish amount of water in the heater core not being distilled, you could try and flush it again with distilled. Of course you'll need to bleed the system again when you are done.
If you are worried about the small'ish amount of water in the heater core not being distilled, you could try and flush it again with distilled. Of course you'll need to bleed the system again when you are done.
Coincidence. The rust was blocking the leak.
Mine hasn't leaked in 150,000 miles and several flushes.
If the rust was blocking the leak it was not a coincidence! It happened because of the thermocure.
You apparently used it for a reason. That makes it your fault.
Quick question, if both hoses are hot and I am getting NO hot or warm air in the cabin would this indicate another problem?
Do not use tap water or water from the hose to flush your heater core. The minerals in the water will rust your system.
Get distilled water from the store and flush it with several gallons of distilled water.
Get distilled water from the store and flush it with several gallons of distilled water.
Sounds more like a blend air door issue. If both heater hoses are hot, it means hot coolant is flowing through the core. If it was luke warm air coming out of the vents, it could be because of a partially plugged core or really scaley/nasty inside of the core not letting the heat transfer. Not even warm? I'm guessing blend air door.
Tough to get pressurized distilled water. Flushing it with the hose then using a funnel to run distilled through it should get must of that hose water out.
I usually do the heater flush right before I reconnect it and flush the entire system so moot point. That also let's the get some of that chemical flush to run through the core along with the rest of the system.
You aren't going to cake your system full of minerals just by flushing hose water briefly through the system.
MountaineerTom
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I’d have no problem flushing with a water hose, then following up by rinsing it out with some distilled water. In fact, I have many times over the years.
Just let one hose hang down to a bucket, raise the other hose and put a funnel in it and pour a gallon of distilled through it.
Just let one hose hang down to a bucket, raise the other hose and put a funnel in it and pour a gallon of distilled through it.