Steps to Check Water Tank Pressure Quickly and Safely

Water tank pressure is one of the most important parameters that determine the operating efficiency of the car engine cooling system.

According to statistics from auto technical experts, about 35% of engine overheating cases are caused by substandard radiator pressure.

Radiator pressure testing requires strict procedures and specialized knowledge to ensure safety and accuracy.

This article will provide detailed instructions on the process of checking radiator pressure, from understanding the role of pressure in the cooling system, when to check, specific steps, to how to handle when detecting abnormalities and choosing the right coolant. Let's take a look!

The role of radiator pressure in the engine cooling system

The cooling system is an essential part of the engine, helping to maintain optimal operating temperatures and prevent overheating. If the pressure is abnormal, it can cause serious problems such as coolant leaks or engine damage.

1. How does the cooling system work?

The cooling system uses coolant to absorb heat from the engine and release it through the radiator. The coolant is pumped from the radiator to the engine and back again after it has cooled. The radiator cap plays an important role in maintaining a stable pressure, which helps raise the boiling point of the coolant to around 119°C.

2. Relationship between pressure and cooling efficiency

The pressure in the cooling system directly affects the cooling efficiency. As the pressure increases, the boiling point of water also increases, preventing boiling and steam formation. This allows the coolant to circulate more efficiently, ensuring that the engine does not overheat.

3. Harmful effects of abnormal radiator pressure

Abnormal pressure can lead to serious problems such as coolant leaks, radiator cap failure, or even engine damage. If the pressure gets too high, the relief valve on the radiator cap will open to release the excess pressure, but if this doesn't happen in time, it can lead to a ruptured radiator or other damage.

When to check radiator pressure?

Radiator pressure checks should be performed periodically and when warning signs appear.

1. Periodic check

Experts recommend checking your radiator pressure at least every time you change your oil or perform routine maintenance on your vehicle. This helps to catch potential problems early before they become serious problems.

2. Warning signs to check immediately

In addition to regular checks, you need to check the radiator pressure as soon as you notice the following signs:

• The engine temperature warning light is on.
• The temperature gauge is reading high.
• Coolant leak under the car.
• Coolant smell in engine compartment.
• The engine makes strange noises.

Detailed instructions for checking water tank pressure

To check the radiator pressure safely and effectively, you need to follow these steps:

1. Prepare tools

To check the radiator pressure, you need to prepare:

• Radiator Pressure Test Kit: Includes pressure gauge, adapters to fit various vehicles, connecting hoses and hand pump.
• Cleaning cloth: Used to clean parts before operation.
• Gloves: Protect hands from heat and chemicals.
• Vehicle Owner's Manual: Look up standard pressure specifications.

2. Pressure testing steps

Step 1: Ensure safety

• Park the vehicle on a stable, level surface, turn off the engine and wait for it to cool completely.
• Open the hood and prop it up securely.

Step 2: Locate the radiator cap

The radiator cap is usually located on top of the radiator and can be made of plastic or metal.

Step 3: Open the radiator cap when it has cooled down.

Slowly turn the cap counterclockwise to relieve pressure before opening it completely. Note: Do not open the radiator cap when the engine is hot, as coolant may spray out and cause burns.

Step 4: Install the pressure gauge

Choose the adapter that fits your vehicle and install it into the radiator neck. Then, connect the pressure gauge to the adapter.

Step 5: Start the engine, let it reach operating temperature

Start the engine and let it idle until the cooling fan comes on. At this point, the engine has reached operating temperature.

Step 6: Observe the gauge and compare it with the standard parameters.

Check the pressure displayed on the gauge and compare it to the standard specifications listed in your vehicle owner's manual. The ideal pressure is usually between 13-17 PSI (0.9 – 1.2 bar).

Step 7: Check for leaks

Look closely at the connections, hoses, and other parts of the cooling system for leaks. If there is a leak, you will see coolant dripping or stains appearing.

How to handle when the water tank pressure is abnormal

If the radiator pressure is abnormally low, check and replace the damaged radiator cap, fix the leak or add coolant. If the radiator pressure is abnormally high, check and repair the fan, replace the thermostat or the damaged water pump to ensure the cooling system operates efficiently.

1. Low pressure

If the water tank pressure is lower than standard, it may be due to the following reasons:

• Damaged radiator cap: A loose radiator cap will prevent pressure from being maintained.
• Coolant Leaks: Coolant leaks at connections, hoses, radiators or even the head gasket.
• Lack of coolant: Insufficient amount of coolant in the system also leads to low pressure.

Treatment:

• Replace radiator cap if damaged.
• Check and fix leaks.
• Add coolant to the specified level.

2. High pressure

Higher than standard radiator pressure can be caused by:

• Cooling fan not working: A faulty fan prevents the radiator from cooling effectively, leading to high pressure.
• Stuck Thermostat: A stuck thermostat in the closed position will restrict the flow of coolant, causing pressure to build up.
• Weak coolant pump: A weak water pump is not able to circulate the coolant, causing pressure to increase.

Treatment:

• Check and repair or replace the fan.
• Replace new thermostat.
• Check and replace water pump if necessary.

Types of coolants and how to choose them

Choosing the right type of coolant is also important to ensure efficient operation of the cooling system.

1. Classification of coolant

Coolants are generally divided into three main types:

• Blue water: No mixing required, often used for old cars.
• Red Liquid (LLC): Contains antifreeze, suitable for new cars.
• Pink water (SLLC): Contains organic acids, has a longer shelf life.

2. Criteria for choosing suitable coolant

When choosing a coolant, you should consider:

• Vehicle type and manufacturer's specifications.
• Periodic replacement time (usually every 2 years).
• Chemical properties of the solution to avoid reaction with metal parts in the system.

FAQ – Frequently Asked Questions

1. Is it necessary to change the coolant periodically?

Car coolant should be replaced periodically every 2 years or after 40.000 km to ensure cooling efficiency and prevent the formation of sludge, abnormal radiator pressure, or corrosion in the system.

2. When should the radiator cap be checked?

The radiator cap should be inspected at least every oil change or when there are signs of leaks, abnormal pressure, or when the engine overheats.

3. How to handle when coolant leak is detected?

When a leak is detected, stop the vehicle immediately, check the leak location, and if necessary, temporarily add coolant before taking the vehicle to a garage for repair.

4. Should I check the radiator pressure at home?

If you have the right knowledge and tools, it is possible to check your radiator pressure yourself. However, if you are unsure, it is best to seek professional help to ensure safety and accuracy.

5. How to handle a punctured car radiator while the car is running?

If detected Radiator leak while driving, stop in a safe place and wait for the engine to cool completely before opening the tank cap. You can then use temporary caulk or heat-resistant tape to temporarily seal the hole until you can get the car to a garage for repairs.

6. Where is a reputable place to repair and replace radiators in Ho Chi Minh City?

Thanh Phong Auto provide inspection and repair services car radiator pressure Professional, ensuring to bring customers absolute peace of mind and satisfaction. With a team of experienced, well-trained technicians and a system of modern equipment, we commit to:

• Check the exact pressure of the radiator with specialized equipment, compare with the standard parameters of each vehicle model.
• Identify the exact cause of abnormal pressure, thereby providing the most optimal treatment plan.
• Repair or replace damaged parts such as radiator cap, thermostat, water pump, pipes, radiator, etc.
• Advise and guide customers on how to maintain the cooling system, choose the right coolant and important notes to ensure the system operates effectively.

Coming to Thanh Phong Auto, customers not only experience high quality service but also enjoy competitive prices and reputable warranty.

Radiator pressure checking and repair service at Thanh Phong Auto includes:

• Check the water tank pressure with a specialized gauge.
• Check for coolant leaks.
• Check thermostat operation.
• Check water pump operation.
• Toilet/ maintenance of cooling radiator.
• Replace radiator cap, thermostat, water pump, hoses, coolant tank (if necessary).
• Add coolant.
• Maintenance advice and guidance Cooling system.

Contact Thanh Phong Auto now for advice and service appointment!