Heater not hot!

[SHOstuff]

I just did some searching on here and came across a thread very similar to mine. And I think that my heater core is blocked and I'd like to know which hose do I connect a water hose to to flush the heater core?

 

[rubydist]

okay, I will try this one more time.

this is basic physics - if you heat the air going over the heater core, the water in the heater core is going to lose temperature in the process. therefore, one hose will be hotter than the other one.

now if there is a partial blockage in the heater core, then the coolant will lose more temperature, and there will be a very large difference in the temperatures of the 2 hoses.

 

[93rev2sev]

rubydist, if the heater core was able to reduce the temperature of the water THAT much, there'd be no need for a radiator on the front of the car. I understand what you're saying but both hoses should be hot. Yes, one will be hotter than the other, but not by an amount you could distinguish by touch.

SHOstuff,
You're either still low on coolant or your water pump is shot or there's a blockage. To look for a blockage, it doesn't matter which side you use. Unhook both ends. I'd first TEST for a blockage. Use a funnel and a hose and just see how freely water will flow out the other side if you pour it in from a bucket, elevated a couple of feet. If it pours out of the hose but drips out of the other side of the core, it's blocked and you might try a "Zip It" Drain cleaner. You should be able to thread this in one side and have it get way more than half way. When you pull it out, it should be clean. Do this on both sides and try the water from a bucket again if the zip it comes out caked with glarph.

Here's a pic...

 

[SHOstuff]

rubydist, if the heater core was able to reduce the temperature of the water THAT much, there'd be no need for a radiator on the front of the car. I understand what you're saying but both hoses should be hot. Yes, one will be hotter than the other, but not by an amount you could distinguish by touch.

SHOstuff,
You're either still low on coolant or your water pump is shot or there's a blockage. To look for a blockage, it doesn't matter which side you use. Unhook both ends. I'd first TEST for a blockage. Use a funnel and a hose and just see how freely water will flow out the other side if you pour it in from a bucket, elevated a couple of feet. If it pours out of the hose but drips out of the other side of the core, it's blocked and you might try a "Zip It" Drain cleaner. You should be able to thread this in one side and have it get way more than half way. When you pull it out, it should be clean. Do this on both sides and try the water from a bucket again if the zip it comes out caked with glarph.

Here's a pic...

OMG....you took the words right out of my mouth. Thats exactly what I'm saying 93. I know the physics of it but what you're saying doesn't make sense ruby, not to pick on you because I value your input. I've heard of using some sort of muric acid, I messed up the word, to get a blockage out of the heater core. My coolant level is fine and I have a brand new water pump on. But I just thought about this too; i remembee putting some stop leak in my system about 5 mos ago too and that could be my cause of some blockage in mu heater core. I know the heater core can only withstand about 16 - 20 psi of pressure so I can't use a vacuum or really high pressure of water.

 

[SHOstuff]

It's Muriatic acid...courtest of Timbo.

 

[SHOstuff]

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