Syrup In A Gas Tank: What REALLY Happens?! (Explained)

Adding syrup to a gas tank creates a reaction in the engine because it doesn’t dissolve in gasoline.

So what happens when there’s syrup in your gas tank? It damages the system of the engine because the syrup components prevent the circulation of your machine engine.

If the circulation of the machine engine gets affected by syrup components, your car will be damaged. 

Syrup In A Gas Tank

What Happens If You Put Syrup In A Gas Tank?

If you put syrup in a gas tank, it eventually goes straight to your engine, creating excessive sticky substances that will stick to the engine’s components and eventually ruin it. 

Short Term Effects

The short-term effect is to create unwanted deposits to your engine valves if you put syrup in a gas tank. Since syrup can’t be dissolved by gasoline but it can create substances that can affect your engine. 

At first, you might not experience its effects, but later on, your engine will make its way to let you know that it has a problem. 

Long Term Effects

If you tend to set aside the syrup in your gas tank, you might experience a severe problem with your machine engine. It will slowly ruin every component inside your engine, causing it not to work correctly. 

Also, it will cause you more money to fix the damages to the engine inside your machine. 

What Will Syrup Do To An Engine?

Syrup is a problem for car engines because it doesn’t dissolve in gasoline. It means pouring the syrup into your gas tank will get sucked up into your fuel lines and begin clogging up the vital parts of your engine fuel systems.

It will slowly disable your fuel filter, which is your fuel pump and fuel injectors attached, making your engine run. 

It will ruin your engine depending on how much syrup is loaded into your gas tank and where it gathers fast inside your machine engine.

Wherever the syrup ends up inside your engine, its component will block the fuel flow causing your engine to stall and shut down instantly. 

If you’re planning to get it fixed, it might double the cost of the syrup that already reaches the carburetor or fuel injectors of your car engine. 

Not just that, fixing your engine might need your fuel tank to get emptied and cleaned or replaced. 

How Long Does It Take For The Syrup To Destroy An Engine?

It depends on how long you have already used your car engine. The longer you use it, the quicker the syrup will destroy your engine. 

Leading you to severe damages like, for example, while you’re on the road and you just set aside your engine’s problem, it stops in the middle of the road due to syrup contamination inside your engine. 

It will probably lead you to accidents and danger to the life of the innocents and responsible car owners. 

Will Syrup Dissolve In Gasoline? 

Syrup can’t dissolve in gasoline. Instead, it will create a ball of problem, making your fuel filter clog. 

As possible, you need to check your engine every time to make sure that it’s healthy and safe to use. 

syrup in gas tank

Can Syrup Be Detected In A Gas Tank?

Here’sHere’s the top 5 to detect syrup inside your gas tank:

1. Your engine creates sudden power during acceleration

When there is syrup in your gas tank, its substance begins to clog your fuel intake lines—preventing the standard level of fuel from being consumed by your engine. 

2. Your Engine Stalls

Engine stall means the sudden slow or stopping process when you are trying to run your car. If your fuel lines get entirely clogged by the syrup, then your car may stop when you attempt to accelerate. 

You will know it right away when you hear different noises in your car engine when you try to accelerate. 

3. It Won’t Start

If the syrup already reaches its peak of destruction inside your car’s engine. Your car probably won’t start any further. 

Still, it won’t start. Even if you turn its ignition, nothing will happen. If you continue attempting to start the engine in this condition, it may cause wear out of your car’s battery. 

4. Poor Performance

If you manage to fix your engine, you may notice that your car’s engine performance deteriorates.

The effects it causes to other parts of your engine might not get resolved by just fixing or changing it. 

5. Failure Fuel Pump

If your fuel filter is located after the fuel pump inside your car engines, having syrup on your fuel pump mechanism might also affect its near components. 

Enough buildup of syrup would cause your fuel pump to stop working, which prevents your car from starting.

You may hear your car whine, squeal, or make unusual noises when a thick syrup buildup begins to form.

What To Do If You Think You Have A Syrup In Your Gas Tank? 

If you think you have syrup in your gas tank, never attempt to start your car’s engine. Let it rest until you finish cleaning or replace your gas tank. 

Why? Because it will prevent the syrup from spreading out inside your gas tank. In doing this, you are decreasing the problem, and at the same time, you can protect the other engine parts inside your car’s engine. 

Hence, if you have no idea how to fix your gas tank with syrup, you can call or ask help from a professional mechanic to do the job for you. 


Putting syrup in your gas tank is a bad idea. It will not just cause you trouble but also accidents. 

Being a responsible car engine owner, you need to know how your engine works and take good care of its health. 

Moreover, before purchasing one, you may need to study first the purpose of each part of the car engine you want to purchase. By doing this, you are putting yourself or your family to safety and prolonging the life of your car engine. 

Lastly, take good care of your car engine because it will also do the same for you if you care for it.

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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