What would cause the bottom radiator hose to collapse?
Molded lower radiator hoses tend to collapse with an increase in engine rpm because the water pump draws more coolant out of the radiator than the hose can handle — negative pressure at the radiator and lower hose causing collapse.
What happens when radiator hose collapses?
Both Dex-Cool and Stop Leak deposits have a tendency to build up in the radiator cap mechanism. If with a collapsed hose you remove the radiator cap (when the engine is cool), and it is gummed up, one or both of these products may be the cause. Either follow the cleaning steps above or replace the cap.
Do lower radiator hoses have springs in them?
The thought that a spring is needed in a radiator hose is a common misconception, that springs (pun intended) from two events. The first is that many (although not all) lower radiator hoses on the production assembly line had springs in them.
Can a lower radiator hose cause overheating?
Faulty cooling system parts, such as a bad radiator hose, may result in coolant leaks and overheating.
How do you fix a collapsed radiator hose?
0:101:52Duramax Collapsed Radiator Hose Repair - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you just go over to the coolant reservoir. You open the lid. And that's gonna let air into itMoreAnd you just go over to the coolant reservoir. You open the lid. And that's gonna let air into it and hose will expand again like she's been class for a while here would pop out much.
What are the symptoms of a faulty radiator cap?
Symptoms of a Bad Radiator CapLeaking coolant.Engine overheating.Collapsed radiator hose.Coolant reservoir tank overflowing.
Why is there a coil in my radiator hose?
Original equipment molded radiator hoses often were equipped with a coil inside them. Some refer to this coil as a spring, but it isn't really a spring. Actually just a piece of thin metal rod that has been twisted, it was designed to facilitate the installation of coolant on the assembly line, and nothing more.
Which hose typically has a spiral wire reinforcement?
SAE 100R4 hose has one or more plies of woven or braided textile fibers with a spiral of body wire. It's typically used for return and suction lines. SAE 100R5 hose is reinforced with two textile braids separated by a high-tensile-strength steel-wire braid.
How is the size of a radiator hose determined?
On traditional muscle-car V8 engines, typically the lower radiator hose should be about 1438-inch larger than the top hose (for example, if the top hose ID is 1 Inches, the bottom hose usually measures 134 or 178 inches).
How do I know if my water pump is circulating?
5:0210:50HOW TO CHECK IF YOUR WATER PUMP WORKS & CIRCULATES ...YouTubeStart of suggested clipEnd of suggested clipOkay just go to your heater. Turn it up full blast through all the vents or open. And see if heatsMoreOkay just go to your heater. Turn it up full blast through all the vents or open. And see if heats coming out got to be a lot of heat.
How do I know if my coolant is circulating?
Start your car's engine and allow it to idle. Look through the radiator filler neck to see if the coolant flows. At this time, it should not be flowing as your car has not reached the operating temperature to cause the thermostat to open. If you find the coolant is flowing, it means the thermostat valve is open.
Should you be able to squeeze radiator hose?
Hoses should not be swollen or cracked, both of which could lead to a failure. Perform a squeeze test. While the engine is warm after a drive, squeeze the radiator hoses, paying particular attention to areas where the hose bends. A radiator hose in good condition should feel firm, but not hard.
Checking Your Radiator Hoses
At every oil change, you should evaluate the condition of your radiator hoses. The engine must be turned off and cool to do this. Never use your hands to check the hoses with the engine running as this poses risk of severe injury.
Should I be Able to Squeeze the Radiator Hoses?
Yes, with the engine off and cooled down, the hoses should be soft enough to squeeze. Hoses in good condition should be flexible to finger pressure but not squishy or spongy feeling. Aging hoses will be hard and brittle.
Should Both Radiator Hoses be Hot?
After a drive of as little as five miles, the upper hose will be quite hot as it will be carrying coolant directly from the engine. If the radiator is doing its job, the bottom hose will be conveying much cooler fluid back to the engine.
Can a Collapsed Radiator Hose Cause Overheating?
Yes, a collapsed hose can cause overheating. If you are driving when a hose goes flat, coolant flow will be restricted. Your instrument panel will give you an elevated temperature indication and/or an overheating warning light.
What is the Function of the Radiator Cap?
The radiator cap closes your cooling system but enables coolant to flow to and from the expansion tank (radiator coolant overflow tank).
Why is my radiator hose collapsing?
Why is my lower radiator hose collapsing? The most common cause for radiator hose collapse is a vacuum issue caused by a faulty radiator cap. Another common problem is clogging of the smaller radiator runoff hose, which leads to the coolant tank. As the engine cools, if fluid cannot return to the tank, this will also cause a vacuum.
What happens when the radiator hose collapses?
Click to see full answer. Consequently, what happens when radiator hose collapses? When an engine is shut down, the coolant temperature begins to drop. If the vacuum valve in the radiator cap fails, the resulting vacuum in the cooling system can cause ...
Why does my radiator hose not heat up?
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.
Why does my radiator hose collapse?
If the radiator hose collapses while the engine is running it’s because the water pump is sucking and coolant isn’t flowing properly, creating a vacuum condition.
Why do car makers put a spring in the radiator hose?
The lower radiator hose is subjected to the most suction pressure so car makers usually install a spring inside the hose to help it maintain it’s shape. However, if someone has replaced the hose and not installed the spring, the lower radiator hose can collapse.
What happens when you shut off the radiator?
When you shut off the engine and the coolant cools and contracts, the contraction in the radiator creates a vacuum condition.
Why is the thermostat closed when the engine is cold?
But the thermostat is the traffic cop in this system. It’s fully closed when the engine is cold to prevent the coolant from circulating. That forces the coolant to heat up.
Can you spill oil on a rubber radiator hose?
But they can also be damaged by oil. If you spill oil on a rubber radiator hose, you clean it off.
Why does my radiator hose collapse?
If the vacuum valve in the radiator cap fails, the resulting vacuum in the cooling system can cause a radiator hose to collapse. A malfunctioning radiator cap can also constrict coolant flow. When this happens, the water pump, trying to draw coolant through the lower radiator hose, can create a vacuum sufficient to collapse the hose.
What happens if a radiator hose is missing?
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.
What is a radiator hose?
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 temperature do radiator hoses need to be?
Radiator hoses are designed to withstand high pressures and temperatures ranging from -40 degrees Fahrenheit to over 250 degrees F. They must also resist chemical attack by coolants and other materials, such as oil and mud, tar and road debris, salt and ozone.
How to tell if a radiator has ECD?
These currents create pits, cracks and striations in hoses, effects that eventually cause them to weaken and fail. ECD can often be identified by pinching a hose at the ends.
