Clr To Clean Out Heater Core

Same as the outlet hose gently twist and pull the hose off.

Clr to clean out heater core.

And let it sit for a few hours. Recently i heard about the idea about using clr to clean out a radiator so i purchased several bottles of clr and i disconnected the radiator hoses and drained the radiator. Have the other end in the bucket to collect the coolant and sediment that comes out of the heater core. Flushing the heater core can remove these clogs but if it fails to work you may need to have your heater core replaced.

And i plugged the bottom radiator hose inlet then i filled the entire radiator with straight clr topped it off with vinegar. Remove calcium lime deposits with old trick itm4x4 is a humble independent mechanical shop. A clogged heater core will prevent the coolant from passing through it limiting the amount of heat that can be transferred. I am wondering if i can use some clr cleaner to help flush out any residue stuck in the heater core.

The heater core is similar to a radiator and is a part of the vehicle s coolant system. Attach the longer section of tubing to heater core inlet. I pulled the heater core and found it to look very good. How to s on repair restoration detail and customization of jd.

Be prepared for some more coolant coming out. You should know however that if you have a heater core that is plugged it may also be. Remove heater core inlet hose. It is the factory aluminum heater core and it appears to have zero issues no leak stains no bulging no corrosion evident of any kind.

Radiator flush which is an acid much like clr but which has been tested fairly well in cooling systems.