Oldsmobile/Buick: gas smell, gasoline smell, gasoline tank

Question
HI ED

I drive a 1992 nissan maxima with 180,000km

Last year, I replaced the gas filler neck because I could see gasoline leaking from the rusted pipe. I have no gas smell since then but now I have gasoline smell again near the similar area. The gas smell is from the back.. not the front.

last time .. the filler neck is leaking gasoline in my driveway

this time.. there's gasoline smell but no gasoline on the ground

Could you give me some idea where the gas smell is coming from ?  .. what part could be leaking gas ?
the smell is from the back,, is not a major leak because there's no gasoline on the ground

bottom of the gasoline tank looks fine.. no leak
I can't see the top part

could you give me some idea where the gas could be leaking from ?  

Answer
FHK ,

I'm the resident Oldsmobile(General Motors) expert so a question regarding a problem with a Nissan Maxima would be way out of my area of expertise.

If I were you I'd take the car to an ASE certified mechanic or even a Nissan specialist and have them give you a diagnosis . Sounds to me like you may have a hidden leak somewhere going down to the tank . To be honest its not something to second guess since the severity of a fuel leak can be catastrophic .

All the best,

Ed McKenna