Home Made Heater Core Boil Out Process

[justinevert]

Apparently there are no radiator shops that can boil out a heater core for you. Any "home brew" tricks one can do? Would it be easier to just pour Prestone flush in one end and let is set to flush it out?

TIA

Justin

[esty]

i believe it's a simple procedure...disconnect your hoses and spray or run water thru it...to reverse flush, spray in the outlet side

[Colin]

I poured some diluted CLR in mine for about 6-7 minutes and then flushed it out. If you keep filling it with hot water after, then shake it, you'll see black crud come out. I did the "rinse and repeat" procedure about 20 times until I didn't see the crud anymore.

[Richard]

The ends of the tank come off rather easy and are rather easy to resolder. Note: Whether you clean or rod out the cleanout is hazordous waste (High lead and copper) unless your in a warm climate clean in a bucket with gloves and flush.

[jgerock]

I like the CLR method (rinse and repeat). Do it at the same time as you clean your furnace humidifier pad (yeah its that time again).

Maybe let it soak in some distilled vinegar and water in a 5 gallon bucket.

[lilmo]

Where are you? Had mine boiled out Recently for less than $20. Also important to have it pressure tested.

[Colin]

I like the CLR method (rinse and repeat). Do it at the same time as you clean your furnace humidifier pad (yeah its that time again).

Maybe let it soak in some distilled vinegar and water in a 5 gallon bucket.

I tried vinegar but it didn't seem to do much. The CLR was quite effective, though.

[02hobiedave]

I went to an old radiator shop and the guy was more than happy to take my 20 dollars for the cleaning. he did a great job the flow was good compared to before I had it done. I would try another place.

[nbristow01]

I like the CLR method (rinse and repeat). Do it at the same time as you clean your furnace humidifier pad (yeah its that time again).

Maybe let it soak in some distilled vinegar and water in a 5 gallon bucket.

I tried vinegar but it didn't seem to do much. The CLR was quite effective, though.

Yep and CLR is great for finding EVERY tiny scratch or cut in your fingers LOL

[Colin]

Yeah I wore gloves when doing the CLR. That stuff stinks and seems like it wouldn't be so good for skin contact.

[JohnS]

Where are you? Had mine boiled out Recently for less than $20. Also important to have it pressure tested.

+1 on having it pressure tested. Mine had a tiny pinhole leak in the core.