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YES - BY back flushing the heater core-same as back flushing the engine block-just use a garden hose.
Usually 'Stop Leak' will not clog the core. Try flushing the cooling system out first.
Note: The hot water goes in and the cooler water comes out. Flush the core going the other way so to clear any obstructions. If there is a clog, it might be something larger like bits of hose or corrosion. If the core is totally clogged, take it out and replace it with a new one. The amount of time you will spend doing this does not warrant using an old or used core.
What else can I help you with?
What do I use to stop small coolant leak in heater core?
To stop a small coolant leak in the heater core, you can use a commercial radiator sealant or coolant stop leak product, which is designed to seal small leaks by forming a barrier. Ensure the engine is cool before applying the product, and follow the manufacturer's instructions for best results. However, keep in mind that this is typically a temporary fix, and it's advisable to repair or replace the heater core for a permanent solution. Regularly check coolant levels and monitor for additional leaks.
Where do you add radiator Stop Leak to a 1996 Oldsmobile Achieva?
I have used radiator stop leak before in my 1996 Olds Achieva SC with the V6. I put it directly into the coolant resovor. It went in fine for me. This did not give me much help though. I would not recommend using stop leak. It will clog your heater core and then you will have more than the radiator as your problem. Fine a new radiator and replace it that is the best advidce i can give you.
Can you repair a leaking AC compressor with some type of 'Stop Leak' or must you get a rebuilt or new compressor?
There are lots of places that can leak freon and some can be sealed with stop leak. The only way is to try it.
Is it a good idea to use oil stop leak additive to stop oil leak from intake manifold gasket?
I wouldn't recommend it. Replace the gasket.
How can you tell if your heater core is not working for a Chevy Malibu 2000 It blows cold air instead of hot air when on hot but every now and then it works then stops Why?
Make sure coolant level is correct It could be a clogged heater core,maybe it is a birds nest or a rats nest if the car was stored.Usually replace the heater core and it will solve it or maybe it is the radiator itself needing flushed.also it could be the switch is not throwing to the position it should be.If the car was in cold climate before maybe it froze over and then was dooshed with heater core repair stop leak.Thats the best I can guess...
How do you stop the water leak in the passenger foot well?
If it is water you have a plugged condensation drain line that needs to be cleaned out. If it is engine coolant you have a leaky heater core that needs to be replaced.
Will stop leak plug the heater core on a Chrysler Sebring?
It can.
How can I effectively stop a water heater leak?
To effectively stop a water heater leak, first turn off the power or gas supply to the water heater. Next, shut off the water supply to the heater. Locate the source of the leak and determine if it can be repaired or if the water heater needs to be replaced. If the leak can be repaired, use a pipe repair kit or replace the faulty part. If the leak is severe, it may be necessary to replace the water heater. It is recommended to consult a professional plumber for assistance with repairing or replacing the water heater.
How do stop heater core leaking tercel?
To stop a heater core leak in a Toyota Tercel, you can use a commercial radiator stop leak product, which can help seal minor leaks. Alternatively, you may need to replace the heater core if the leak is significant. Ensure you flush the cooling system to remove any debris before applying a stop leak solution. Always check for any underlying issues that might cause the leak, such as corrosion or loose connections.
Your 1985 Caprice does not blow out a sufficient amount of heat What could be the problem?
the heater core could be clogged with rust or stop leak . or u don't have enough hot water flow through the heater core . under the hood on most cars on the heater hose is a off/ on valve to control the flow of hot water...anti-freeze...to the heater core.....R
What causes Antifreeze leak by feet on an 88 thunderbird?
caused by leaking heater core not radiator heater it is under the dash hard ot get to if the leak is not to big use radiator stop leak otherwise fix is going to be big bucks
I have a slow leak in the radiator of my 99 Volkswagen Jetta Can I use a stop leak product?
Be careful - some of these products can plug the heater core
Will Stop Leak fix a heater core and if not how do you replace it in a 1990 Town Car?
Stop leak will generally plug up holes u want plugged, but they will also plug up holes u don't want plugged. Better to fix the heater core.
Will prestone stop leak work in a 94 bretta with a v6 small leak steaming up windshield on drivers side only thanks bobp?
Are you sure it is a antifreeze leak? If so ,stop leak will not help heater core leaks.But make sure that is the problem.
How do you stop a antifreeze leak?
if it is leaking from the radiator you can crack an egg and put it in the radiator and it will solve your problem
Where is the heater core on an 87 escort?
It is inside the heating A/C housing. The dash has to come out to get to it. A very involved repair. Even the most experienced master mechanics cringe at having to do a heater core repair. I would suggest putting some aluminum stop leak in the radiator. It will stop the leak in the heater core and will save you the grief of pulling the dash out.
Will stop leak work on a heater core or how do you change one in a 1990 corvette?
It should work assuming the leak isn't too big. Try it you have nothing to loose.
