Super Jet Gas Tank Vent

[FlightRisk]

What vents fumes OUT of the gas tank?

Example, it's summer and the ski gets hot. Or it's on a trailer, and the ski is getting bumped around from the road creating fumes and pressure in the gas tank. What relieves the pressure?

 

[Proformance1]

? didnt you just answer that question with the question Gas tank vent?

 

[munki63]

There should be a vent that runs up to your pole from your gas tank with a check valve to stop water from going in your tank

 

[FlightRisk]

? didnt you just answer that question with the question Gas tank vent?

No, or I wouldn't have asked it.

The one way valve lets air INTO the tank, not venting pressure out.

 

[Proformance1]

Im not sure I agree with ya there. The vent, vents, or else it would pressurize till the carbs blew gas into the cylinders hydrolocking the motor, or it blows the fuel lines off.

 

[Matt_E]

It does let air into the tank.
But it also lets air out of the tank if the pressure climbs above a certain level (not sure what it is).

 

[Proformance1]

any one up for a vent pop off test?

 

[munki63]

normally closed valve that lets pressure out

 

[FlightRisk]

any one up for a vent pop off test?

I like where this is heading! Someone test it!

I guess I should just replace my one way valve...since it truly works just one way...

 

[Proformance1]

That's why it's supposed to be ran out to the pole so you dont get fumes inside the hull. A lot of us cut them short and it keeps the water out of the tank but you should always remove the hood before starting, especially after setting. there should be an arrow on it showing how it goes

 

[FlightRisk]

Yup, agreed. My gas tank setup is still stock, I haven't cut it short yet. I just never realized it vented pressure out of the tank above a certain psi.

 

[Proformance1]

Try blowing through the valve the opposite direction of the arrow, if you can it's junk, get a new one.

 

[FlightRisk]

Air flows in the correct direction according to the arrow. That's why I was asking what vents pressure in the tank, because no air moves in the other direction.

 

[Proformance1]

Did you try blowing the oposite way of the arrow?

 

[FlightRisk]

Yep, no air flows through. It shouldn't... should it? One way vale = air moves one way... correct?

Sounds like it should vent the other direction above some ammount of pressure.

 

[munki63]

:arms:

 

[FlightRisk]

Thank you for the help.

 

[QuickMick]

Do all of you still run the water trap with the fuel vent?
I removed mine to do some glass work, never put it back. I rode all last year without it and it hasnt been a problem. I do run the one way valve though.

Ize just wondering.

 

[munki63]

Do all of you still run the water trap with the fuel vent?
I removed mine to do some glass work, never put it back. I rode all last year without it and it hasnt been a problem. I do run the one way valve though.

Ize just wondering.

DEAR GOD NO!!

lol mine fills up every second ride

 

[Dustin Mustangs]

An oem one will vent at a very slow rate starting right around 5 psi. You can find replacements for cheaper from auto parts stores but do not run one. They do not vent until failure at around 40 psi. Most people run a pop off below that so running one of those could get you in a very sticky situation. If you want to cheap out just coil up some hose and secure it under the tank strap but I personally would even advise against that unless you open your hood before every start.