How Water Enters a Motorcycle Engine and What to Do

Due to ongoing heavy rainfall, floods, and water logging in various parts of the country, there is a significant risk of water entering motorcycle engines. If water enters the engine, especially into the cylinder, it can cause a serious issue known as hydro lock, which may lead to severe engine damage.
the causes and preventive actions you should take written below:


Components through Which Water Can Enter the Engine
1. Air Intake / Air Filter Box:
• If the motorcycle is submerged in water while the engine is running, water can enter through the air intake and reach the cylinder directly.
• Riding in heavy rain or through standing water can also cause the air filter to become soaked, allowing water to be drawn into the engine.
2. Exhaust Pipe:
• If the bike is fully or partially submerged, water can travel up the exhaust pipe and into the engine.
3. Spark Plug Hole / Damaged Gasket:
• A loosely fitted spark plug or a damaged gasket can provide an entry point for water into the engine.
4. Carburetor or Throttle Body:
• Water may enter the carburetor or electronic fuel injection (EFI) system and mix with the air-fuel mixture, leading to engine problems.
5. Engine Breather Pipe:
• The breather pipe, which balances internal engine pressure, can allow water inside if the bike is submerged.
6. Oil Filler Cap:
• If not sealed properly, water may enter through the oil filler cap and mix with the engine oil.
When Water Entry Is Most Likely:
• When riding through deep water that rises above the air intake level.
• If the motorcycle falls into water, submerging the exhaust or air intake.
• Leaving the bike running in heavy rain or during water logging.
• Storing the motorcycle in a low-lying area where water accumulates.



What You Should Do If Water Gets In:
1. Do Not Attempt to Start the Engine:
• If you suspect water has entered the engine, never try to start it. Doing so may cause severe internal damage.
2. Disconnect the Battery:
• Prevents accidental starting of the engine.
3. Remove the Spark Plug:
• This releases pressure in the cylinder and allows any water to escape.
4. Manually Rotate the Engine:
• Use the kick-start or a hand crank gently to help push water out of the engine.
5. Check the Engine Oil:
• If the oil appears milky or creamy, water has mixed with it. In that case, replace the engine oil immediately.
6. Inspect the Air Filter:
• If the filter is wet, clean or replace it before attempting to start the engine.
7. Clean the Carburetor or EFI System:
• If water has reached these components, they must be thoroughly cleaned to avoid further complications.
8. Seek Professional Help:
• If you're not experienced in motorcycle maintenance, it's best to take the bike to a qualified mechanic.





Avoid the Following:
• Do not repeatedly attempt to start the engine.
• Do not dismantle parts you're unfamiliar with.
• Do not ride the bike unless you're certain there's no water in the engine.

Prevention Tips:
• Avoid riding during heavy rain or through flooded areas.
• Park your motorcycle in an elevated or sheltered place.
• Use a waterproof bike cover if rain is expected.
• In flood-prone areas, consider moving your bike to a higher ground before water accumulates.
By following these steps, you can minimize the risk of water damage to your motorcycle's engine and ensure its longevity even during extreme weather conditions.