Signs of a Damaged Radiator Cap, Causes & How to Fix It

The condition of a car overheating is not only caused by a problematic car radiator. It can also be caused by a damaged radiator cap. Therefore, you need to understand the signs of a damaged radiator cap, the factors causing it, and how to address it. For more details, let's take a look at the following review.

5 Signs of a Damaged Radiator Cap

Here are some signs that you can understand when the radiator cap is damaged.

1. Broken or missing vacuum valve

One sign of a damaged radiator cap can be marked by a broken or missing vacuum valve.

2. Cracked rubber on the pressure valve

The second sign can be marked by cracked rubber on the pressure valve.

3. Reservoir tank always full

A sign of a damaged radiator cap can be marked by a full reservoir tank. This condition occurs because the water inside the radiator shrinks and returns to the reservoir tank.

4. Car engine easily overheats

The fourth sign can be marked by the condition of a car engine that easily overheats.

5. Radiator water runs out quickly

The last sign of a damaged radiator cap can be marked by the condition where the water in the engine radiator runs out quickly.

Causes of Damaged Radiator Cap

Here are some causes of radiator cap damage that you need to know.

1. Age of the car

Damage to the engine radiator cap can be caused by the age of the car. Every component used in a car has its own wear limit, including the radiator cap, pressure valve rubber, and vacuum valve. This damage occurs because the radiator is exposed to engine heat. As you know, the radiator functions as a coolant for the car engine.

2. Lack of caution when opening or closing the radiator

When you are cleaning and filling the radiator water, you often open and close the seal (radiator cap).

If you are not careful, it can cause the radiator cap and other components inside to break and become damaged. This damage can trigger the reservoir tank to always be full, radiator water to run out quickly, and cause the car engine to easily overheat.

How to Repair a Damaged Radiator Cap

If the damage to the radiator cap is caused by a broken valve part, you can use glue to bond the broken part. However, this is only a temporary solution. It is better to replace the damaged radiator cap with a new one.

How to Maintain Radiator Cap to Prevent Damage

To minimize damage to the radiator cap, you can take the following steps.

1. Do not open the radiator cap carelessly

Opening the radiator cap should not be done carelessly. Because it can cause the vacuum valve and pressure valve rubber to become loose.

Additionally, when opening the radiator cap, it is not recommended to do so when the engine is hot. If this is violated, the hot steam inside the radiator can escape and spray, causing damage to the radiator cap.

2. Always check the condition of the radiator cap and its components

Regularly checking the radiator cap when the car engine is cold can prevent damage to the radiator cap and its components. By routinely checking, you can determine whether the pressure valve rubber is brittle or not. Whether the vacuum valve is broken or missing.

If the condition of these components is no longer suitable for use, it is advisable to replace them with new components. You can buy a radiator cap and worn components at the nearest Daihatsu dealer.

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