What Causes the Smell of Engine Oil?

[DelReagan]

Here are the specific reasons for the smell of engine oil: Overfilled Gasoline: Gasoline may flow into the carbon canister through the pipes. When the carbon canister, originally used to collect gasoline vapor, is invaded by gasoline, it releases excess gasoline vapor through the ventilation holes. When the air conditioning is in the external circulation mode, the smell of gasoline can enter the car. Gasoline Pipe Leakage: The smell of gasoline may enter the car through the air conditioning system. Leakage usually occurs at the joints between pipes. Open the engine compartment cover; if there is leakage at the joints, dust will adhere to the surface, forming oil sludge. Replacing or Disassembling the Gasoline Pump: The smell of gasoline inside the car may be caused by residual substances not being cleaned up after disassembly, leading to the smell. It is necessary to go to a repair shop to check whether the gasoline pump is installed correctly.