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Discussion Starter #1
Hello everyone. I'm new to this forum and am looking for some help with a gas leak on my '94 A8. Anyway, last year I rebuilt my petcock and discovered a gas leak after reassembling the tank etc. The leak seems to be coming from the two mounting bolts for the petcock. I did use a new petcock gasket and new nylon washers when I put everything back together. Was I supposed to seal the threads of the bolts before installing them, or is there something else I'm missing? I'd just like to know where I went wrong so I can repair it correctly. Thanks for reading my post.
 

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The only thing I can think may be wrong is that one bolt was tightened to tight before the other one was tightened down.Let us know what you find
 

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Discussion Starter #3
Thanks so much for replying. I guess it's possible that the bolts were tightened unevenly. So are you saying that I don't need any thread sealer on the two bolts? If I didn't mention it before, I did use a new o-ring and I thought that I also replaced the two nylon washers for the bolts, but I'm not sure. Is there a torque spec on the two bolts or some other tips for avoiding a leak like this when I reassemble everything? Thanks again for the help!
 

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You should'nt need any thread sealer on the bolts.I would just take it back off,make sure all the surfaces are clean,and reassemble it.You may have pinched an o ring or the gasket.Then tighten up everything evenly.There are probably torgue specs somewhere,but just tighten them up snug,you should be ok.

Happy trails
:character00201:

Mike
 

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Discussion Starter #5
Thanks. Unfortunately, I've been working a lot of overtime lately and haven't been able to work on the bike. I'll give that a try as soon as I can. I appreciate the help.
 

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Mike has it right, sounds like you didn't get it aligned right, or tightened one side too much too fast, or maybe some trash got between the gasket.
 

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I'm with stupi..... the other guys.

Yeah, take it apart. And try again.
sometimes when a gasket is over tightened it will squirt out and cause a leak. You sound like you have an Idea of whats gone wrong. But you wont know exactly, till it's apart...

good luck.
 
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