Tank replacement and installation of service petcock

[JerGStwinguy]

Hello, quick update on CharGStwingirl, she is back up and riding well.  Still has a time with solo rides though.  Both legs have healed nicely and she is also back to running again.
I am trying to replace the tank she dented with her pelvis and I used a new o-ring and washers, torqued it up evenly and it looked good, ran good and I called it good.  At 5 am we had a puddle under the bike and it looked as if the leak was between the tank and the petcock.  O-ring was not pinched.  Is there a sealant like gasketcinch I should use as well?

Jer

[The Buddha]

I use gascacinch or permatex gasket maker, but holding back a whole tank of gas, I'd not rely on it. tanks sometimes are made with a ripple in the steel right between the bolts for the petcock. That imperfection may be the culprit. I have a nice blue tank that has that issue.
Cool.
Buddha.

[JerGStwinguy]

I just sanded the entire surface where the service petcock will seat and am going to dry set it. The see if it leaks

[JerGStwinguy]

has nobody ever replaced the service petcock before? With the exception of Buddah.  I put gas in it today after dry fitting it to the tank with a new o-ring and gaskets.  I will let it set overnite and if it doesnt leak I will put it back on tomorrow.

Thanks to all

Jer

[theGrinch]

Did you change the O-ring in the petcock as well? That was done for on my 99 and kept leaking like mad. Pics: http://www.gs-500.info/index.php?title=Benzinhahn_reparieren (sorry, text not trnaslated yet but you should get what I mean).

Also: Have you checked the hoses? Especially at the top where they mount onto the petcock, pretty prone to ripping there.

Hope that helps.