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"Old rubber hoses leak and crack..."

Engine temperatures (especially in this weather) together with hot coolant inside, stress rubber compounds. When exposed to oil or other contaminants, cooling hoses degrade over time. Rubber becomes soft if hot oil drips from a leaky engine onto it. Small cracks in the rubber develop and get worse over time. Eventually, the hose will split and begin to leak. At this stage, you’re simply waiting for a massive failure to occur.

Usually, a failing coolant hose will produce a few symptoms that can alert the rider of a potential issue. 

 

1. Cracked hoses

One of the first visible symptoms of an issue with a coolant hose is visibly dry or cracked hoses. Visibly cracked hoses are structurally weakened and more prone to coolant leaks. Replacing worn hoses is advised to prevent them from leaking or failing.

 

2. Coolant leaks

The first symptom of an issue with the bike’s radiator hoses is leaking coolant. While rubber hoses are resistant to coolant and heat, they will eventually wear out over time. Old rubber hoses will break down, weaken, and eventually rupture and leak. Leaving coolant leaks unattended will lead to further problems.

 

3. Engine overheating

Another symptom of an issue with OEM coolant hoses is engine overheating. If there is an excessive leak, the coolant loss will compromise the cooling system and result in overheating. Prevent additional engine damage by addressing overheating issues as soon as possible.

You can make a quick inspection of your hoses without removing them. When the engine’s been off long enough to cool down, squeeze each hose in various spots. Hoses in good condition will feel firm and quickly pop back to shape if the rubber is in good condition. Hoses that feel spongy have dried out and are more susceptible to cracks and leaks. Older hoses that have hardened tend to weep and leak coolant around the attachment areas first, so keep an eye out for this.

 

Visible cracks or splits on the outside of the hose are another sure sign that a hose needs immediate replacement. 

 

No prizes for guessing which silicone coolant hoses we recommend as a replacement? That’s right, Samco Sport silicone hoses!

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