How to Replace a Lower Radiator Hose

I will say NO to driving with leaked or damaged lower radiator hose. You never know; it can burst itself all of a sudden.  I wouldn’t even get in my car without having it replaced.

It doesn’t matter what car you’re driving, replacing the lower radiator hose is easy-peasy, at least for me. The only part which you might have to struggle with is when you’ll try to find a way to get to the clamps.

However, with the right tools and steps, you can do the impossible. If you want to know how to replace a lower radiator hose, you might want to jump to the next sections.

You’ll Need These Items

1. A Drain Pan
2. Large flat-head screwdriver.
3. Large pliers

How to Replace Lower Radiator Hose – Let’s Get Started

1. First off, you need to raise the hood of your vehicle. You need to make sure that the hose and radiators are cool. If they’re hot, wait until they’re cool enough so that you can touch them. Once they cool down, turn the radiator cap counterclockwise so that you can remove it.

2. Do you see the drain pan? Keep it under the radiator. There’s always a drain valve on the bottom of the radiator, find it.

Now, turn the valve counterclockwise to make it loose. You’ll see the fluid is draining. Wait until all the fluid is completely drained.

3. Now, it’s time for you to search for the hose clamps. You’ll find them at each end of the radiator hose. Get your hands on a screwdriver and use it to turn the clamps counterclockwise, so that you can loosen them.

Afterward, you’ll need to remove the hose.  You can do it easily as you twist the hose back and forth. Also, in the meantime, you’ll need to pull it away from the fitting.

If you think the hose is too tight for you and you’ll need a muscle to twist it loose, you can use the large pliers as they’ll get handy.

4. The hose fittings will most likely have grease or rust. If that’s the case, you’ll need to wipe the hose fittings very well, so that all the grease and rusts are gone.

As you’ll have the new hose now, you’ll have to place the hose clamps over its ends.  Now, it’s time for you to slide the whole assembly over the fittings.

After you’re done with everything, turn the clamp screw clockwise so that you can tighten the hose clamps.

As you proceed, the radiator should be refilled with coolant, but make sure you have tightened the radiator drain valve.  If you’re done with this step, it’s time to replace the radiator cap.

Start your car and check if there’s any leak. Shut down your vehicle as it reaches the operating temperature, and wait until it cools off.  Finally, give the coolant level a re-check once the engine has been cooled.

Here Are Some Free Tips

• If you think you’re not going to re-use the radiator hose, you can cut it off the fittings very easily. Just make sure you cut it off after the coolant has been drained.
• You can re-use the coolant if it stays clean.
• Sometimes, as you tighten the hose clamps, they might feel weaker. If you face any issues like that, don’t forget to replace them.

BEWARE!

• The anti-freeze is very poisonous and deadly to humans and animals. You don’t want someone to swallow it, do you? If you don’t want any trouble, never leave the antifreeze lying around. Also, you’ll need to clean the antifreeze if you accidentally spill it because they’re very slippery.
• As I said earlier, let the hoses and radiator to cool down. Never give it a thought to work on a vehicle if the hoses and radiator are hot.
• If you’re going to remove the hose from a plastic connection, you need to be extra careful. You might end up breaking the plastic nipple, and if that’s the case, you’ll have to spend your money to buy a new radiator.  Inserting a screwdriver, or a small pick between the nipple and hose can come pretty handy. This way, you’ll be able to break the grip the hose as on the seal. As a result, removing the hose will be easier.
• Make sure the air is not trapped inside your cooling system. Otherwise, it may lead to hot spots, overheating and damage. To avoid it, you’ll have to burp your system thoroughly.

However, always remember, never even think about driving your car with a leaking radiator hose. It’s too risky.