Hi guys....I don't know whether is this normal or not, hope you guys can help me out here....

When I start my car in the morning to warm up the engine..I let it run for 5-10 minutes to let the engine warm up on running temp and my water temp meter say 82. I touched the top part of the Koyo radiator and hose are hot. But when I touch the bottom part of the radiator and hose are cold. Could this be some blockage problem or some similar cases?

But after driving it and stop at my office I touched the bottom part of the radiator and hose are hot.

Is this normal?

Maybe the theory is, the top part of the radiator will get hot first then later only the bottom part? Or both should be the same time?

Please..Thanks

 

The coolant from the engine enters the rad via the upper hose- after the thermostat has opened, obviously- and exits from the bottom, so you'd expect the rad's matrix to warm from top to bottom.

 

Oh now i get it. I'm so dumb. Thanks alot. I think this should be normal then.....

 

ya thats true. i thought about the same thing but when i had a cold spot it was on the top and hot in the bottom and my temp was actually hotter than normal and realized there was an air bubble that caused an uneven flow but after letting it run, cool down and adding coolant it was cool.