noise from gas tank

When shifting (manual) clicking sound come from under the car. When
knock to gas tank sound come as fuel pump hitting the bottom, or foreign
object is inside. Does anybody have this weird sound when knock to gas tank?

 

Possibly a baffle came loose inside the tank. I saw this on an '01
elantra, I think.

 

What does it take to fix it? Can it be done without dropping a gas tank?

 

To repair properly, you'd need to replace the gas tank if a baffle has
broken loose.

It's possible, however, if the piece is small enough, to pull it out the
fuel pump opening in the top of the tank. There's an access cover for the
fuel pump under the rear seat.

 

What is the danger to leave as is? Can spark start and blow up the car?
It appear from the sound that one site is loose and other is still
intack creating resonanting/vibrating sound when bang to it.

 

I'd not even thought about the sparking issue. I suppose it's possible but
very unlikely. Probably the largest issue would be getting caught on your
float and causing an incorrect fuel reading.

 

Right. Sparking would not be an issue. The vapor in the
tank is way, way below the explosive limit. That's why electric
fuel senders (and pumps) can be put in the tank with no worries.

Speedy Jim
http://www.nls.net/mp/volks/

 

Thank you all for your reply; it is very comforting to have such a
quality support on line.
As I mentioned from sound of it, it is more like musical instrument
resonating - as you suggested one site from baffle is loose, making
metal-to-metal vibrating sound when rapid vehicle change. I will
therefore wait for next wormer day and try to fish it out through fuel
pump opening. (or break of mentioned baffle) If unsuccessful, I will
leave situations to observe further. Gas tank replacement seems
premature at this point.
Thanks again all.

 

2002 elantral fule tank noise

i am having the same problem, like a scraping sound coming from the fule tank, i removed the back seat and going to remove the cover and fule pump in the nex two weeks i will le u know how it goes.

 

noise from fule tank elantra 2002

pulled the pump and found the baffel was loose on one side but on a 2002 elantra it is one piece and about 1.5 feet long so i decided not to remove it,
also very sharp so if you do decide to break it off with out removing the tank use leather gloves,
i will check on aftermarket fule tank and before pulling the fule tank buy a new fule filer i here it is attached to the fule pump would be a good time to replace it if replacing tank