Gas tank expanding? - MVAgusta.net
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post #1 of 12 (permalink) Old 06-19-2015, 11:25 PM Thread Starter
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Gas tank expanding?

Hey guys, I've heard a problem with the gas tanks and I think mine has that issue, but not from ethanol gas. I found a small crack in my paint job on the gas tank: it's starting to get hot in Texas and I think the heat is causing air inside the gas tank to expand. I keep my bike in a garage, but it gets hot in there

Any solutions?
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post #2 of 12 (permalink) Old 06-20-2015, 04:14 AM
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Post photos.

Are you 100% sure the tank has never had ethanol fuel in it? I was in Austin a few months back and couldn't find a single fuel station offering ethanol free fuel.
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post #3 of 12 (permalink) Old 06-20-2015, 04:24 AM
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The tank is vented, so fuel gasses expanding shouldn't happen. If the venting system (gas cap vent) was plugged up, I doubt it would even run.

"When the people fear their government there is tyranny,when the government fears the people there is liberty. My reading of history convinces me that most bad government results from too much government"--Thomas Jefferson

Last edited by Matt M.; 06-20-2015 at 04:27 AM.
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post #4 of 12 (permalink) Old 06-20-2015, 02:22 PM Thread Starter
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I have only used ethanol gas. Maybe I'm in denial that it's a serious issue. Hopefully the warranty will cover it
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post #5 of 12 (permalink) Old 06-20-2015, 03:23 PM Thread Starter
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Here's a picture of the crack in my tank
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post #6 of 12 (permalink) Old 06-20-2015, 07:45 PM
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Yeah, that looks like ethanol expansion to me. If your still under warranty, tell your dealer, you should get a new tank. Ethanol 101... #1 use the fuel up in less than a month , #2 always use a fuel additive like Startron no matter what, #3 some get the tank lined too, a good precaution.

"When the people fear their government there is tyranny,when the government fears the people there is liberty. My reading of history convinces me that most bad government results from too much government"--Thomas Jefferson
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post #7 of 12 (permalink) Old 06-21-2015, 01:30 AM Thread Starter
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Thank you for the assistance in diagnosing the matter. I will take it to the dealer. I bought an extended warranty along with the factory warranty so it should get fixed. And I'll make sure to use those precautions. Thanks again!
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post #8 of 12 (permalink) Old 06-22-2015, 10:59 PM
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Even if it's out of warranty, your dealer should replace it. The new tanks are supposed to be designed to handle ethanol. You can tell if it's a new tank by taking the seat off and looking for a round gray circle stamped where the tank attaches to the frame.

I've had my new tank for a year now. No problems at all.

Last edited by tobysdad; 06-22-2015 at 11:03 PM.
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post #9 of 12 (permalink) Old 06-23-2015, 02:10 PM Thread Starter
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Oh cool! Thanks. I was worried my bike I wouldn't be able to ride my bike.
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post #10 of 12 (permalink) Old 06-23-2015, 07:21 PM
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I've had 3 of their supposed "new" tanks already. Take my advice about how to treat the ethanol fuel.

"When the people fear their government there is tyranny,when the government fears the people there is liberty. My reading of history convinces me that most bad government results from too much government"--Thomas Jefferson
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