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Tank Vent Tube?
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Tank Vent Tube? - August 8, 2011, 10:16 AM

So I was just getting home last Friday after work and was coming up on empty. I stopped at the gas station, turned her off, put the key in the gas cap and turned it.

All of a sudden, as I'm still straddled, my cap pops open and I get a geyser of gas literally eye level (maybe a foot and a half or two). My front end gets soaked and these vatos at the next pump are staring at me in amazement. I look at them, shrug my shoulders and proceed to dismount to grab some towels and begin wiping her down.

What the hell happened? I asked around on 600rr.net and some folks said it's my vent tube. Mind you, I haven't lifted my tank in several months and this is the first time I've seen (or heard of, for that fact) this happen. So is there something that could have clogged my tank vent?

I'm going to lift the tank tonight or tomorrow to take a closer look at the tube, but wanted to see if there is anything in particular I should be looking for.

Thanks.


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August 8, 2011, 11:47 AM

I'm pretty sure the vent is in the fuel cap itself. You have a service manual? I sort of remember something about it while looking for something else. If you don't have one, shoot me a PM with your email and I will PDF you those pages.


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August 8, 2011, 02:35 PM

Lucky that shit didn't ignite.


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August 12, 2011, 10:16 AM

Ok, here's the deal:
The vent tube is designed to allow air in to the tank as Fuel is consumed by the engine. When this vent tube is clogged, generally speaking you get a vacuum in the tank. This can disrupt the fuel flow obviously. It's hard to imagine how this would build positive pressure in the tank or the lines. Well, bring it over and I'll take a look at it for you and see what we can see.


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