Is the lower radiator hose hot or cold?

The upper radiator hose is extremely hot, the lower radiator hose is cold. The thermostat has been replaced 3 times now. They have all been put in boiling water, and they all opened. The car has been parked on an inclined and filled with coolant, been jacked up and filled, we’ve used the cap to vent, we’ve used the bleeder to vent.

Why does upper radiator hose keep building up pressure?

Q: Upper radiator hose keeps building up a lot of pressure and popping off. Car loses coolant and over heats. My upper radiator hose keeps building alit of pressure and popping off and car loses coolant and overheats. I changed radiator cap after reading that could be problem. My car has 191400 miles. Hello, thank you for writing in.

What causes poor flow in a Subaru radiator?

The most common cause of poor flow in a Subaru is air trapped in the engine block. I would flow test the radiator and visually inspect the radiator interior. The flow tests is not very helpful. A radiator can flow great but not transfer heat if it is fouled with coolant scale deposits.

What causes water to overflow from the radiator?

The car still overheats. Again, upper hose hot, lower cold. The radiator is cold by the lower hose, then warm in an arc around the cold section, then hot along the top and on the entire passenger half of the radiator. Radiator fluid overflowed the overflow.

How often should I refill my portacool water reservoir?

Once all the water along with the mud and debris the unit has collected from the air in the bottom of the water reservoir has drained, refill with fresh clean water and resume use. It takes only about 10 minutes every 3 weeks or so to keep the hoses, tubes and reservoir clean and free from odors and bacteria.

How do you get coolant out of a heat exchanger?

Blow in one of the hoses till most of the coolant is out of the heat exchanger, just be sure to not swallow any coolant… Then i removed the hoses completely and tilted the nose down so the coolant would come more towards the inlet/outlet holes and used a small pump to get the rest out.

How do you hook up a portacool evaporative cooler?

A: All Portacool evaporative coolers are ready to use right out of the box. You simply remove the packing and shipping pallet, add water, plug into a standard 110v wall socket (or 220v if applicable) and enjoy the cold air. Q. Why isn’t my Portacool model producing cool air?

What happens if your oil cooler hose is broken?

Having leaking oil cooler hoses can lead to the engine becoming low on oil. The friction that this low oil level will bring to the internal parts of the engine can create a good bit of damage. If your oil cooler hose is broken, here are some of the things that you may start to notice:

What should I do if my oil cooler leaks?

Tighten them down with a line wrench, and make sure they are not too tight. Once the oil cooler hose is connected, you need to refill the reservoir with any oil that leaked out. Fill the oil and then start the car. This will allow the oil to circulate through the oil cooler hose. Check to make sure there aren’t any leaks along the line.

How do you replace an oil cooler line?

If the oil cooler hose is kept secure with a line holder, use a small socket to remove the retaining bolts. The oil cooler line should then drop away from the frame and the clamps holding it in place. One of the hardest parts of replacing the oil cooler line, is removing it from the engine compartment.

Where does the oil cooler hose go in a car?

An oil cooler hose supplies the transmission and engine oil with a way to circulate and cool down. This hose runs from the individual parts to the radiator in the front of the engine compartment. Without the air cooler hose the engine, or the transmission, will get too hot to operate smoothly, and burn up.

What does it mean when your car coolant hose is cold?

The engine needs to be really hot and almost overheat before the thermostat lets the coolant pass by. If your car is not overheating, but the lower coolant hose is cold when you feel it – it may just mean that it is not hot enough, and therefore there is nothing wrong with your engine.

Why is the bottom of my radiator cold?

If there is a leak, you will experience lower radiator hose cold. To locate the leak, look at the bottom of the radiator. You should see droplets of water forming whenever you fill the radiator. One leak if not fixed will lead to further leaks and this means you need to fix a leak – irrespective of how small it is – immediately.

When is the top of the radiator supposed to be hot?

Either-way, the top hose gets hot after the thermostat has opened. The time the thermostat takes to open depends upon factors such as: In this post you’ll learn how the coolant system works, when the top hose should get hot and what you should do if it doesn’t. The coolant system after the oil system is the next most critical system.

Where is the thermostat between the radiator and engine block?

On my engine the thermostat is between the bottom hose of the radiator and the engine block. When the car has overheated and I check the hoses the top one is always very hot but the bottom one is always cold. the same applies to the radiator (which is new), its very hot at the top but cold at the bottom.

How to get the top radiator hose to be hot?

1 Remove the splash tray and push the coolant catch tray in. 2 Remove the thermostat cap, usually on the top hose at the engine. 3 Clean the stat seat on the engine and cap. 4 Lube the new stat seal with fresh coolant and fit it, check the orientation (Jiggle valve up). 5 Tighten down the cap bolts and torque to approx 10Nm (89in lbs).

What causes the lower radiator hose to get cold?

Thus, making the lower radiator hose to heat up. It may happen that your car might get low on coolant and is not able to reach the lower radiator. As a result, the lower hose emits cold air. 2. Water Leaks The most common problem that is guilty of this issue is the water leaks. There are several places responsible for these leaks.

Why is the lower radiator coolant not reaching the heater?

You might know that if the thermostat is not able to provide a signal to the car that the engine is hot, the coolant will not drive to the heater and the air will remain cool. As a result, the coolant will not reach the lower radiator and will produce cool air only.

Why is coolant building up on my radiator?

Typically it is because the hose or the plastic neck that connects it to the radiator/component has failed. You will want to inspect both sides of the problem hose, and determine if the clamp is doing its job. Considering it is the top hose, the coolant is coming from the thermostat and flowing down through the radiator to be cooled.