What Is a Collapsed Hose?

Hoses are used extensively throughout your engine, and they’re all subject to pressurized fluid. However, collapse is usually only a problem on radiator hoses – generally the upper hose, and only in certain situations.

During normal operation, your hoses should appear the same visibly whether the engine is hot or cold. Bulging or collapsing are both signs of problems in the system, albeit different problems. If you’ve noticed that your upper radiator hose has collapsed, there are a couple of potential culprits.

What causes a radiator hose to collapse

The primary concern here is vacuum in the system created as the engine cools. If your radiator cap is not releasing pressure on the system, it can cause a vacuum to develop (coolant is unable to move to the reservoir/overflow tank). This can collapse the upper radiator hose.

Another potential issue is a blocked overflow hose. This will cause the same symptoms as a faulty radiator cap. There’s also the potential issue of a clog somewhere in the cooling system creating a vacuum and causing the hose to collapse on itself. However, the amount of vacuum created by a clog in the system is often not enough to collapse a new hose – it can be a sign that your hose is deteriorating and should be replaced.

Some hoses have wire reinforcement woven into the rubber of the body. If some of the reinforcement is faulty or broken, it creates a weak spot in the hose, and collapse can happen. If you have a collapsed hose, there’s definitely a problem in the system. The first suspect should be the radiator cap, and/or a faulty hose, but there are other possibilities that should be ruled out as well. A professional mechanic can help determine the actual underlying cause.


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Recent Radiator Hose Repair reviews

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682
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682
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7
5
11

Lavell

28 years of experience
230 reviews
Lavell
28 years of experience
Ford Ranger V6-3.0L - Radiator Hose - Emeryville, California
Worked on my sons car and did a stellar job for what was needed. Actually got us in sooner with a cancellation which was much appreciated.
Chevrolet Sonic - Radiator Hose - Vallejo, California
Another great job by Lavell. He was on it. Calls you prior to appointment about questions, thorough in inspection. Prompt and careful during the process. Takes photos and leaves audio notes afterwards. I trust in Lavell to book him again with another appointment. Thanks so much. Glad to find a mechanic to trust and that will come to the house to fix issues.

Jay

37 years of experience
947 reviews
Jay
37 years of experience
Dodge Ram 1500 V8-5.9L - Radiator Hose - Riverside, California
Yesterday was the second time I used You Mechanic for at home service and Jay again went above and beyond what was expected. As a disabled/retired car guy myself it was hard to hand off my mechanical chores to someone else, but Jay is a Godsend, I can now rest easy now that I have a mechanic who performs and cares as I have my whole life. If you're located in the Riverside area I highly recommend Jay as a great mechanic, and Your Mechanic as a service provider one can trust . . .
Chrysler Town & Country - Radiator Hose - Upland, California
Jay, as I’ve said before, is the consummate professional. He sets the standard for the auto repair industry. This job was just like all the others Jay has done for us - accurately estimated, well done, good advice dispensed. Jay cares for all 3 of our vehicles - a car, van and SUV, one of which is American, one Japanese and one Korean. The vehicles ages are 23, 11 and 6 and Jay has them all running like the day they were new. The best decision I ever made was choosing YourMechanic (and getting Jay)!

Robert

20 years of experience
1089 reviews
Robert
20 years of experience
Hyundai Elantra L4-2.0L - Radiator Hose - Denver, Colorado
Robert quotes 5.5 hrs on my car repair, but he got everything knocked out in less than 3 hrs! Super professional, knowledgeable and friendly! I'll be booking future appointments with him!
Jeep Liberty - Radiator Hose - Denver, Colorado
Robert is great. He pays great attention to what needs to be done. He only fixes what needs to be fixed. I will definitely use him again.

Jamie

22 years of experience
91 reviews
Jamie
22 years of experience
Ford Ranger V6-4.0L - Radiator Hose - Rancho Cucamonga, California
Jamie is a master at his craft he was able to diagnose the problem and locate the leak. I thought I needed a radiator hose but was actually another hose. He made sure he got it fixed and got me on the road again asap. Definitely went above and beyond for me and am sure that's just his everyday work ethic.
Volvo C70 - Radiator Hose - Highland, California
I can’t recommend Jamie highly enough. He goes the extra mile to explain everything and is very knowledgeable. He even came back after work because I had and took extra time to make sure things were good.

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