2003 chevrolet impala

[pinetree]

Smell gas especially in rear of car. Mechanic can't find problem. He has done smoke test.

[carriedi]

when do you smell gas? did the mechanic that checked your can notice the smell? Try to find out under what circumstances the gas smell occurs.

after a fill up?
when it's close to empty?
After a short drive and you have come to a stop?
only after you turn the engine off?
only when the car is running?

looking for a occurrence that can be traced...

[raneger]

Smell gas especially in rear of car. Mechanic can't find problem. He has done smoke test.

It's weird the Mechanic can't find the problem..

[Guest]

I had the same problem, but the mechanic did find the problem. Apparently it was a defective fuel pressure valve that is prone to leakage. He replaced it, but after a day, it happened again. I brought it back and he replaced it free of charge and said that is a known problem with the OEM part. The replacement did its job for about a year and then that one went as well. Try replacing it with one that is NOT an OEM replacement part.