Clr To Clean Out Heater Core

I am wondering if i can use some clr cleaner to help flush out any residue stuck in the heater core.

Clr to clean out heater core.

I then poured an entire container of clr into the heater core until it started spilling on the opposite end of the heater core. You should know however that if you have a heater core that is plugged it may also be. I pulled the heater core and found it to look very good. Have the other end in the bucket to collect the coolant and sediment that comes out of the heater core.

I attached the end of the garden hose back to the inlet side and i let the clr do its thing for about 30 mins. Remove calcium lime deposits with old trick itm4x4 is a humble independent mechanical shop. 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. 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.

Remove heater core inlet hose. How to s on repair restoration detail and customization of jd. And i plugged the bottom radiator hose inlet then i filled the entire radiator with straight clr topped it off with vinegar. The heater core is similar to a radiator and is a part of the vehicle s coolant system.

Radiator flush which is an acid much like clr but which has been tested fairly well in cooling systems. Same as the outlet hose gently twist and pull the hose off. And let it sit for a few hours. Attach the longer section of tubing to heater core inlet.

Flushing the heater core can remove these clogs but if it fails to work you may need to have your heater core replaced.