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Fuel tank building pressure 06 600 fusion

Polaris General Discussion

 
 
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Old 12-18-2011
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Default Fuel tank building pressure 06 600 fusion

When I start my sled to pull it out of the garage and after I get done working I pull it back in. Maybe let it idle for 3-4 min, before I pull it back in. When I get it in the garage and shut it off I can hear a whistling from my sled. The first time I heard it, I was trying to figure out what the heck it was. I unscrewed the gas cap and it flew up in the air a good couple feet. Just wondering if this is normal in the 06 600 fusions, or is my tank vent plugged up. I know that the power valve line goes to the gas tank and didn't know if they use that pressure to open up the valves?

Any info anyone can give me would be greatly appreciated.
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Old 12-18-2011
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By power valve I assume you mean VES valve. There is absolutely no reason why that should be running to the gas tank.

If you have a 600 CFI you will have an electronic fuel pump in the tank, with a return line coming back from the throttle bodies, but it should not pressurize the tank.


How do you have enough snow to be riding in IL?
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Old 12-18-2011
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I don't just pulling it out of the garage to work on other things. I have a picture in the factory service manual that shows the line coming out of the solenoid for the VES to the fuel tank vent line. Let me see if I can dig it up.
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Old 12-18-2011
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Here it is, its the line on the left, it goes from there directly to the solenoid that opens and closes the VES.

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Old 12-18-2011
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It has carbs, no EFI.
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Old 12-18-2011
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From the picture and the parts diagrams that looks as if it might be a stock connection, although I don't know why you would want the VES vented to the tank.

So, if your VES lines are vented to your tank, and you tank is building pressure, you have a torn bellow (part # 5412733)in one or both of your VES assemblies.
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Old 12-18-2011
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Just got done cleaning my valves and inspecting my bellows. All is good. That line goes through the solenoid and into the bottom of the bellows.

Would they use the tank pressure to pressurize under the bellows to move your valves up when that solenoid opens?
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Old 12-19-2011
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If you have the 600 HO (carbed) there is no reason why your tank should be pressurized. I would check to see if you have another vent line that is plugged, or if the other side of that T fitting is plugged.
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Old 12-19-2011
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Will do, I will let you know what I find out.
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