Some petrol smell from the exhaust.

[Greenelantra]

Hi,

When I warm up the car in the morning,there will be some petrol smell come out from the exhaust.Is that normal .This happens only when the car is park for more than 8hrs.

Regards

Liang

[Normal_aspirated]

Happen to my car also. ECU in open-loop and so higher idling rpm with rich A/F mixture. Engine is not yet warmed up, and Cat is not hot enough to burn out excess fuel.......I think.