In my opinion, no! I've used hose clamps many times and have had no issues. If the hose gets messed up or leaks because of that then you know it was just due to be replaced anyways and would have failed sooner or later. That's why I always test the hoses or see of they have been replaced. A good replaced hose you can clamp. I never liked clamping brake hoses or rubber powersteering lines cuz those usually get dried out and as soon as you clamp them they split. The ones Scotty Kilmer was using were wayyy better because they don't have any sharp parts on it or have to use much force.

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I think it depends on the hose, what you are trying to clamp it with and how tight you clamp it. I have needle nose vice grips with air hose pieces over the teeth, works great for smaller hoses and I only squeeze the hose I need clamped just enough to do the job. About the biggest hose I've done is a 3/4" heater hose. I wouldn't want to do it on an old brake line but if it was still very pliable then maybe. I usually squeeze the hose in the opposite direction to remove the slight deformity made from the original clamping. Interesting that someone is selling tools for this.

 

I don't pinch rubber lines or hoses.

First, it's abuse that the hose is not designed for. It will cause a leak or rupture now, or soon later.

Second, when I have a fluid system apart, the fluid is usually ready to be changed. If not, I change it anyway. Fluid changes are a cheap way to extend the life of the system.

Dave

 

I have clamped brake hoses for years. I usually just use a pair of vice grips with black tape on them. I've never had an issue. If you have old hoses that could crack then you risk damage but if they're that bad you should replace them anyway. I'd use those clamps. I may even buy me a set.

 

I have a drawer filled with several "Caplugs" of various sizes that I've collected over the past couple decades, golf tees, and a few "blind" bolts of varying diameters (defects...bolts where the manufacturer forgot to thread them!...smooth shank, no way they can damage the inside surface of a rubber hose). I use these to plug hoses.

Have avoided clamping hoses for years, now that I have rat-holed a decent collection of improvisational plugs. I think I have a couple Caplugs large enough to plug up a radiator hose....though, I did clamp hoses at one time, and have damaged a few of them.

Back then, years ago, few vehicles offered too much difficulty to replace a hose I may have damaged by clamping. These days with the way drivetrain components are shoehorned into an engine bay, if you damage one segment of a hose, you may find that one end of it is near-impossible to un-clamp and remove (to facilitate replacement) unless you remove several items from the engine or engine bay.

I'm getting too old for this.

OF

 

I have personally never done it but mainly due to the fact that I replaced the fluid any way. But if I were just replacing a caliper or radiator I don't really see any reason not to clamp off the hose. Unless the hose is in need of replacement in which case it doesn't matter if it tears b/c it will be replaced any way

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