How to Fix 2 Stroke Motor Bicycle Engine Flooding?


The 2 stroke engines are commonly used in chainsaws, lawnmowers, and weed whackers. There are small combustion engines that function on oil and gasoline. They can also be used in motorbikes. If you are using the best 2 stroke bicycle engine for your bike, flooding may become a problem for you.

In a motorbike, too much gasoline can cause a flood to the two-stroke engine. As a result, it becomes crucial to fix it as soon as possible. In this article, we will briefly see the necessary steps of how to fix 2 stroke motor bicycle engine flooding.

How to Fix 2 Stroke Motor Bicycle Engine Flooding: 5 Easy Steps

When engines are flooded, the engine compression gets increased. As a result, the bike will not start. One of the simplest solutions to the problem would be to evaporate the gas. However, this may take a lot of time. There are other ways that you can fix the problem really soon.

But before we dive into the solutions, we need to understand how you can be sure that the engine is flooded. Two major problems will cause the engine to flood- the gasoline and ignition problems. When there is gasoline flooding, the combustion chamber will be filled with a high amount of gasoline. As a result, the cylinder walls will be coated, and the electrodes will be dampened. If you can ensure that the electrical system is running fine, you can conclude that there is flooding in the engine.

This engine flooding can be fixed with 5 simple steps. You will need water, a wrench, spark plugs, and rags for the whole process.

Step 1: Remove the Spark Plug

Your first task would be to remove the spark plug. You can use the wrench to remove the spark plug from its place. Once you remove the spark plug, you will need to check whether it is dry or wet. If the plug is wet, you will have to dry it by using a piece of cloth. A clean rag can be used to wipe the plug properly, and then it should be kept under the sun for a significant amount of time. After that, you will have to check if the plug is producing a proper spark or not. If the plug is not producing enough spark, you may have to replace it with a new one.

Step 2: Drain off the Excess Gasoline

In the second step, you will need to turn off the carburetor choke and the gas line. Then go to one of the sides of the bike and lay it off slightly. As a result, the excess gasoline will get drained away. The excess gasoline was collected inside the overflow tubes. You can use the rag to wipe the draining gasoline over the bike.

Step 3: Kick Start the Bike

In this step, you will have to dry the compression cylinder. You can begin doing this by starting the bike 8 to 10 times while the sparking park is not attached. You can either kick start the bike or manually start it with the help of another person.

Step 4: Reattach the Spark Plug

After starting the bike a couple of times, you can now reattach the spark plug. Make sure that the plug is sparking properly and is dried completely under the sun. In case the plug was not sparking properly, you would have to buy a new one and then attach it. Once you attach the spark plug, kick start the bike again, and also, the gas should be turned on.

Step 5: Examine the Engine Cylinder

This is the final step of the process. You should start the process by checking if there is any excess gasoline left inside the engine that may cause flooding again. If you pull the oil plug gently, you can easily check this. You should change the cylinder if you still find excess gasoline. You may also find some dirt in there. Use the rag to clean the carbs. You should install a fuel filter to avoid this kind of problem in the future.


Your motorbike is likely a thing you like a lot. As a result, you should know how to fix 2 stroke motor bicycle engine flooding whenever you face such problems. Even though the 5 steps should be enough to solve the problem, you should maintain timely checkups to the garage shop. This can ensure that the problem is not repeated over and over again. Moreover, your bike will remain healthy in the long run.