Water In Engine Block: Is It Serious? (All You Need To Know)

Vehicles are very well used things nowadays. Therefore, it provides convenience and comfort all at once in a car. 

So, is water in the engine block serious? Yes, water in the engine block is a serious matter. 

It will not just block the engine but also can be dangerous because it will explode if you keep on trying to start it. 

You should know how to tell that your engine is blocked with water. Then, you will notice its sounds and performance. 

Maintenance is a part of a car owner’s responsibility. Although maintenance is costly, do it to protect you and your family. Maintaining your car is not just a pastime because you preserve the car engine’s quality when you do so. 

Old and new cars undergo maintenance, especially the old ones. Please note that maintenance should not be a big deal for you when it’s about safety.

Besides, buying a car can bring you convenience and comfort, becoming a liability. If you are still starting in your life, you can start buying a smaller car model because it has a small maintenance value. 

We will talk about what you need to know about what will happen. For example, if water gets inside the engine block of your car: 

Water In Engine Block

What Happens If Water Gets In The Engine Block? 

If the water gets inside the engine, it will block its function. You cannot run your car— due to several attempts to start the engine contaminated with water might cause a fire-up.

The engine should be dry all the time; even during rainy days, you should put your car in a high dry area.

How Do I Get Water Out Of My Engine Block?

You can get the water out inside the engine block by first removing its bottom hose from the engine. Then, you can locate it near the radiator of your car.

Then, wait until all the substance inside leaves. Then, you can use a pump to pump out small substances that remain inside. Every substance should leave the engine before replacing anything inside it. 

How To Check If Water Has Entered The Engine Block?

Here are the ways to check if water enters the engine block:

1. Check Car Interior

You can start checking the upholstery, door, and trim panels if there is sticky buildup. If they are wet, then the vehicle needs professional attention. 

2. Pull The Engine Oil

Next, you need to pull the engine oil and its transmission fluid dipstick. If you notice that the fluid appears to be milky-like, your engine block is contaminated with water. 

3. Check Car Filters

If you feel the filters are wet, there is water present. Replace your air filter, then change your car oil. 

4. Check the Car Undercarriage 

Check if there is a liquid moist like buildup inside. If you have a buildup, wash it and clean it.

5. Check Your Brakes

If water blocks your engine, you can’t move the brakes. On the other hand, if the brakes stay in place, the water dominates the car engine. 

When the water dominates the engine, there is no chance that you will fix your car. So, when you notice that your car isn’t responding correctly, do not use it as early as possible. 

Can You Drive A Car With Water In The Engine Block?

No, you can’t drive your car because when water blocks the engine, it will not start. Instead, it will create sputtering sounds inside the combustion until it creates a loud sound. 

If it happens, don’t force anymore and ask for help from your family to call a professional mechanic to fix the problem. 

Can A Flooded Engine Block Fix Itself?

No, it can’t fix its issue. You or the professional should fix all types of car issues like flooded engine blocks.

Blockage can’t be undone using a computer system, and you should use your hands and effort to unblock it.

Related: Water In Cylinder


If water blocks your engine, it won’t work correctly. It will not start as you expect it to be.  You can’t mix fuel with any substance inside the car. Because if it mixes, the car engine will burn to cause severe damage inside. 

If the engine gets badly damaged, there is an instance that you need to get all parts of your engine replaced. It is because car engines have many linkages inside. So when one part starts to function poorly, the other link will also be affected.

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Image credits – Canva

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My name is Hank, and I've been in the automotive industry for 27 years. I've been working in my own auto repair shop for the last 13 years, and now I want to help you here, on my blog. Let me know if you have any questions. Read more