Is the lower radiator hose cold or hot?
After the engine has warmed up (as warm as it is going to get), the upper radiator hose is hot, the heater core hoses are hot, the little bypass hose is hot, the lower radiator hose is cold/barely warm. Coolant level is fine.
What are the radiator hoses in a car made of?
Car radiator hoses are the two flexible tubes that circulate coolant from the engine to the radiator, where it is cooled, then back to the engine. There are two types of radiator hoses: molded and flexible. Radiator hoses are constructed from silicone rubber, neoprene and other synthetic materials, and are designed for long service life.
What causes a radiator hose to collapse on a car?
Some radiator hoses have an inner reinforcing coil or wire reinforcement. If it is missing or damaged, the lower radiator hose could collapse at high vehicle speeds, thereby constricting or cutting off coolant flow to the engine. A collapsed hose will often resume its normal shape when the engine slows down or is turned off.
Why are the hoses to the heater core cold?
But it sounds like a bunged up heater core…..or a massive air pocket blocking coolant flow into the heater core. With the engine cold and you’ve got reasonable access to safely disconnect your heater core hoses one at a time, disconnect one or the other and have a friend start the engine.
Why are there two hoses in a radiator?
Radiator hoses are a vital part of the cooling system that carry hot coolant from the engine through the radiator and circulate it back — cooler — to the engine again. There are two hoses, the upper and lower, and they’re thick and sturdy enough to handle both high pressures and immense heat.
How to check the coolant flow direction in a Honda?
fill the sys, take the top hose off the radiator (still on engine), remove themostate and leave the rad cap on and watch the water get shot out of the top neck of rad…a trick to see if water pump is defective haha, yeah I could do that if no one knows… which is pretty surprising.
But it sounds like a bunged up heater core…..or a massive air pocket blocking coolant flow into the heater core. With the engine cold and you’ve got reasonable access to safely disconnect your heater core hoses one at a time, disconnect one or the other and have a friend start the engine.
What causes a radiator hose Cap to collapse?
Engine overheating is not necessarily a cause or effect of a collapsed hose. The most common cause for radiator hose collapse is a vacuum issue caused by a faulty radiator cap. Caps are rated around 14–16 psi.