"Mensa" <realpeoplel@localnet.com> wrote in message
news:kHdrf.53965$XC4.53314@twister.nyroc.rr.com...
>I might also add - it seems to me that to to see what part is leaking - you
>would have to take the tank down. But with the tank off (and emptied) - it
>may be difficult to see where the leak was coming from if nothing is
>obvious.
>
>
> "Mensa" <realpeoplel@localnet.com> wrote in message
> news:XDdrf.53964$XC4.52058@twister.nyroc.rr.com...
>> If anyone can help here appreciated. I have a 1999 Odyssey
>>
>> I had an accident 3 weeks ago where my car rolled down my driveway (with
>> no one in it) and ran over some landscaping rocks. The rocks crushed my
>> gas tank.
>>
>> They replaced the gas tank (and a few other minor things) - but now when
>> I fill up the tank completely - there is a smell of fuel in the car and
>> there is a small amount of fuel dripping from somewhere out of the top of
>> the tank and dripping on the garage floor. I can't see where its coming
>> from but obviously from the top of the tank somewhere. Again - this
>> problem only occurs when the tank is 100% full. If 95 % full - no leak.
>> The small amount of gas that leaks stops after the car has been turned
>> off for 20 minutes (it does not continue to leak all night or anything
>> like that).
>>
>> Obviously - the van goes right back Monday morning - but I just wanted to
>> know - if not the tank - what else at the top of the tank holds fuel and
>> could be leaking for a short time after the Odyssey is turned off.
>>
>> All help appreciated
>>
>
>
As the others say - the attachment of the tank to the filler neck is the
obvious trouble point.

Troubleshooting is pretty much the same as testing. The cap is replaced with
a pressure adapter and the tank is pressurized to a pound or two - if it
doesn't hold, it's a matter of listening/feeling for the leak. I've done it
before in our old Volvo with an adapter to a bicycle pump, and it's amazing
how much hiss there is from a very small pressure.

Mike