I have a buzzing noise under my car in the back center. It doesn't seem to be the exhaust because I moved it around and the noise didn't change. The noise is located approximately where the read diff is. Is it possible something in the gas tank could make that noise. I don't know what else it could be. Any ideas?

 

Bumble Bee? Do you have a walbro installed?

 

I bought the car from a used car dealer and they didn't know what it had. So Im not sure. If I open up the fuel tank to look at the pump can you tell the diff between a stock pump and walbro?

 

most likley its a the fuel pump. wally for sure if its buzzing, a way to check is put the turn signal on and if the nosie changes as the signal blinks then its the pump..