What causes the smell of engine oil when the car is heated?

1. Generally, the smell of gasoline is mostly caused by carbon cans. The carbon particles in it are saturated or fail, so that the fuel vapor in the fuel tank is discharged into the atmosphere and then sucked into the cab by the fan. This means that the carbon canister must be replaced.

Second, there are other possibilities:

1. The gasket in the water tank cover is aged or uneven.

2. The nozzle and throttle valve have not been cleaned for a long time, resulting in insufficient gasoline combustion.

3. The gasoline filter is dirty or the connecting hose interface is loose and aging.

4. The gasoline purification carbon canister is dirty or invalid.

5. The oil tank connecting hose is aging and loose.

6, the car sealing performance is not good.