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Fed up !!

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Guest

Guest
Ok here is the deal. I put my bike up last October with it having no issues what so ever. I get it out this spring to find that it is leaking gas from the petcock where it meets the tank. I took the petcock off and cleaned the mounting surface ( it is bare metal now from where the gas ate it away) it was good for a couple of days then started leaking again, so I ordered another gasket (o-ring) and some new washers for the screws. The leak stopped for a couple more days then started again.

Just last Friday I replaced the Petcock ( even though the one on there was just replaced last spring) and the gas cap. The leak stopped for a couple more days but is now leaking again.I am at a loss as to what is causing the leaks to keep happening. So far I have been able to ride a total of 2 days. If I cant get the leak stopped within the next week or two I am just going to put the bike up for sale to afford buying a newer one that I can get out and enjoy.

I really don't mind throwing money into these old bikes but when I'm doing more spending than I am riding thats when I start getting annoyed. :( If anyone has any good solutions I am all ears. All I want to do is ride.....

Thanks in advance :)
 
Have you tried a thin layer of Blue Hylomar (or however it's spelled)? I used it on my Pingel petcock and haven't had any problems at all.
 
Are there any signs of rust/corrosion allowing the fuel to seep through at all? Perhaps a small pin hole some where maybe?
 
It's got new OEM sealing washers along with OEM bolts from Zook. He's replaced everything that either he or I can think of and I'm just as stumped as he is.
 
A carved-up old air box boot works disturbingly well as sealing washer. Make sure it's an old, hard one. Don't forget for two years that it was supposed to be temporary.

This might be a job for a smear of sealant to help the gasket. Gas is sneaky stuff, and will escape through tiny cuts in the seal or scratches in a sealing surface.
 
TheCafeKid said:
It's got new OEM sealing washers along with OEM bolts from Zook. He's replaced everything that either he or I can think of and I'm just as stumped as he is.
Click to expand...

It's not doing something crazy like running down from the fuel level sensor is it?
 
Check the sealing surface for flatness and for loosened paint allowing fuel to run between it and the metal of the tank. Check for a pinhole (pinholes?) in the tanks metal by applying a tracing powder like talcum in the general area. Check for a defect in the sealing surface of the petcock.
 
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Dogma and allojohn have the 2 best ideas.
As a plumber, I like the idea of some gasket sealer slop on those surfaces.

If you got all OEM stuff put in the right way, it's gotta be something else, or a detail you ain't found.

Could be one of the hoses is actually leaking.

No way I'd let a tiny thing like this get me stupid.
 
I RTVed the crap out of my petcock, going on 3 years now, not a drop.

Oem gasket is leaking? Why am I not surprised.
 
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Highly unusual,
Something has got to be awry.
I'd be looking for hairline cracks in the tank that extend past the O ring gas tank to petcock seal, or perhaps around the petcock mounting screws.
It's important to note exactly where the gas is seeping from so you can
focus your efforts to attemp a fix.
I had a gas leak, it turned out to be the O ring under the selector lever.
I thought for sure it was the mating surface leaking.
 
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