How To Clean A Car Carburetor Without Removing It?

The carburetor is an essential part of vehicles using internal combustion engines. Because it uses gasoline or diesel, the engine also needs a carburetor to create an explosive mixture to provide enough operating pressure for the cylinders inside.

But in fact, the car carburetor is quite challenging to access and disassemble for cleaning because of the inherent complexity that this system possesses. So today, we will show you how to clean a car carburetor without removing it.

What Is Car Carburetor?

What Is Car Carburetor

We all know that all types of internal combustion engines use the same operating process of refueling, burning fuel, transmission, and finally discharging the waste, which is the smoke from the exhaust pipe.

However, if only the raw fuel is available, the likelihood of ignition will be pretty low, and you cannot ignite this amount of energy alone with the spark from the spark plug. 

Instead, the fuel flows into the carburetor and then mixes with the air to create a more explosive mixture than usual. In addition, we can increase the amount of air into the carburetor through the camshaft to increase performance

So we can say that the carburetor plays a vital role.

How To Determine That Your Car Carburetor Needs Cleaning? 

All car activities are partly related to the carburetor, so it is not surprising that this part has to operate continuously for a long time. Because of having to maintain such long-term performance, it is not too difficult to understand when dirt will appear and reduce the performance of the car carburetor. So, where exactly are the times we need to work to clean this part?

Your Engine Runs Lean

Suppose your car emits clicking noises or annoying hissing noises continuously. In that case, you will need to check and clean the car carburetor because this is the most obvious sign of the Runs Lean phenomenon.

Runs Lean is a phenomenon that occurs when an imbalance in the ratio between air and fuel occurs. Usually, the air-to-fuel ratio is around 15:1 or 12:1, and if the air-to-fuel balance goes up abnormally, it’s Runs Lean.

Your Engine Runs Rich

If there is too much air, the fuel will not be enough to ignite and cause pressure to push the piston. 

And when the power is too much, the Runs Rich will occur, and the burning will be more complex, and at the same time, a lot of waste will also be mixed with the smoke causing the color to change to milky white or completely black. 

That is why the color of the smoke can indicate whether the engine has white smoke.

Your Automobile Does Not Start

There are many different causes of engine inactivity, such as temperature, coolant, or even factors such as leaks or electronic devices not starting can also be the reason. 

Of course, car carburetors aren’t a less common cause, so you’ll need to double-check this as well.

Flooded Engine

If your engine has just experienced flooding problems, you will need to clean the carburetor as soon as possible. Water has likely entered and unbalanced the mixing ratio.

How To Clean A Car Carburetor Without Removing It?

How To Clean A Car Carburetor Without Removing It

For the carburetor cleaning process to go smoothly, you need to refer to the steps below carefully.

Step 1: Wearing protective gear and using safety tools is essential because you will have to work with potentially corrosive chemicals. Not only that, cleaning up dirt and chemicals after manipulation also contains many potential dangers like when clean thrown up from a car. 

Step 2: Turn off the engine, remove the air filter housing, hoses, links, and the bottom bowl.

Of course, we will need to turn off the engine and let it cool down for 30 minutes if the engine is hot. Once the machine has completely cooled down, you will need to remove the air filter housing along with any hoses and connections and the bottom bowl.

Step 3: Vacuum away dirt, dust, debris, grime from the surface with a hand-held and cordless vacuum cleaner

In this step, use a hand-held vacuum cleaner or blower of appropriate capacity to remove any visible debris from the surface of the carburetor components. Remember that this step requires care.

Step 4: Apply thin and even coats of paint to the carburetor cleaner and choke. Then wait for it to stabilize and take effect.

  • Before working in this step, you need to prepare the lining cloths below to avoid chemicals and water from spreading to the surface and affecting these locations.
  • Then, prepare the carburetor and cleaning tools. The operation steps are not too much when you need to hold the sprayer and hold it about half a palm length from the outside windshield to clean the outside carburetor. 
  • Shake well and place your finger on the nozzle, ready to press down to spray.
  • Remember to evenly spray and spread the coating rather than focusing on just a few spots.

Step 5: Clean all parts again. It is when we need to use the tools we have prepared in advance. It would help if you did the following in turn:

  • Wipe away dirt with a microfiber towel and stiff bristle brush or wire brush with the applied cleaning solution.
  • Wipe the carburetor with a dry cloth,
  • Use a rag or cloth to clean the bottom of the carburetor and other tools

In this final step, you need to put the parts back in their original position.

Frequently Asked Questions(FAQ’s)

How long does it take carb cleaner to dry?

This process takes about 1 to 2 hours, equal to the time it takes to align the tires.

Can wd40 be used as a carburetor cleaner?

No, you cannot use wd40 or any other brand of spray oil as a carburetor cleaner. Because these substances are oils, not detergents

Does boiling a carburetor work?

Boiling is also a method you can try, although the time it takes to manipulate is much longer than usual.


So above, we showed you how to clean a car carburetor without removing it. Hopefully, this knowledge will help you a lot in using and maintaining the vehicle.

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