Negative pressure is created in the crankcase of an engine through the process of crankcase ventilation. This system allows blow-by gases, which are a mixture of air, fuel, and exhaust gases that escape past the piston rings during combustion, to be vented out of the crankcase. As these gases are expelled, they create a vacuum effect within the crankcase, resulting in negative pressure. This negative pressure helps to improve engine performance by reducing internal air pressure and preventing oil leaks. **

Your scooter may be losing oil and smoking from the valve cover breather hose due to a few possible reasons. One potential cause could be worn piston rings or valve seals, which can lead to oil being burned in the combustion chamber and then expelled through the breather hose. Another possibility is that the breather hose is clogged or blocked, causing pressure to build up in the crankcase and forcing oil out through the hose. Additionally, if the scooter is overfilled with oil, it can lead to excess oil being pushed out through the breather hose. It's important to have a professional mechanic inspect and diagnose the issue to determine the exact cause and necessary repairs. **

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Yes, the oil pump on the crankcase of the scooter is essential for lubricating the engine components and ensuring smooth operation. Without the oil pump, the engine may suffer from excessive friction and heat, leading to premature wear and potential damage. It is important to regularly check and maintain the oil pump to ensure proper lubrication and prolong the life of the scooter's engine. **

The crankcase of a Simson moped typically holds around 800 ml of oil. It is important to regularly check and maintain the oil level in the crankcase to ensure proper lubrication of the engine components and optimal performance of the moped. Overfilling or underfilling the crankcase with oil can lead to engine damage, so it is essential to follow the manufacturer's recommendations for oil capacity. **

Gasoline in the crankcase of the Jetforce C-Tech scooter could be due to a variety of reasons, such as a leaking fuel injector, a faulty fuel pump, or an issue with the carburetor. When these components malfunction, excess gasoline can leak into the crankcase, contaminating the engine oil. This can lead to poor engine performance, increased wear and tear on engine components, and potential safety hazards. Regular maintenance and prompt repairs are essential to prevent gasoline from entering the crankcase and ensure the scooter operates smoothly. **

Cars do not have an open crankcase ventilation with an oil mist separator because it can lead to environmental pollution. An open system would release harmful emissions, including unburned hydrocarbons and particulate matter, into the atmosphere. Additionally, an open system could potentially allow dirt and debris to enter the engine, causing damage and reducing its efficiency. Therefore, modern cars are equipped with closed crankcase ventilation systems that route the gases back into the intake system to be burned in the engine. **

Gasoline in the crankcase of the Roller Jetforce C-Tech could be due to a few reasons. One possibility is that there is a problem with the fuel system, such as a leaking fuel injector or a faulty fuel pump, causing gasoline to leak into the crankcase. Another reason could be an issue with the piston rings or cylinder walls, allowing gasoline to seep past and mix with the engine oil. It is important to address this issue promptly as it can lead to engine damage and decreased performance. **