Fuel pump change now what?

[acre44]

I just changed the fuel pump on my 99 Grand Prix GT with the 3.8 NA. I removed the cover in the trunk area between the back seats disconnected the 3 lines and 2 plugs and took off the C-ring. I took out the old one and put in a new Airtex pump. I put in the new rubber O-ring around the pump and reinstalled the C-ring. I hooked up the lines and the plugs. NOW, I have a gas smell. It started after I filled up the car before a 60 mile trip. The smell in the car was unbearable I had to open all the windows. I took off the cover and no signs of any leaks. Since that fill up when I park it in the garage I can smell gas fumes outside the car. I ran it for awhile and watched the pump, no leaks, I got under the car, no leaks. I noticed right after I started it that around the pump I caught the smell but NO leaks. Is this normal or do I need to seal it up better somehow?

Thanks for all your help!

[Langning]

The air vents are coming from the engine bay. If you smell gas inside cabin, should you be checking the front? ie. fuel rail/injectors/fpr.

[GTP Dad]

I agree with Langning you have a leak under the hood. I would check the fuel rail connections first but this may be a leaking FPR. When the diaphragm goes bad they will leak fuel. The new fuel pump is much stronger than the old one and it may have caused a leak that would not have been seen prior to the installation.