Vent Tubes

[HayabusaTime]

I have back pressure when I open my cap on the tank. I'm wondering how I should go about cleaning the vent tubes. If anyone has suggestions please let me know. I will post a video of the back pressure in this thread.

 

[sixpack577]

Pull the rubber hoses off the tank and blow compressed air through them.
You can also blow compressed air into the metal tubes that the hoses go on.
I would also disassemble the gas cap and clean it, as the ball valve can get gummed up and stick closed, preventing the tank from being able to vent through it.

 

[HayabusaTime]

Pull the rubber hoses off the tank and blow compressed air through them.
You can also blow compressed air into the metal tubes that the hoses go on.
I would also disassemble the gas cap and clean it, as the ball valve can get gummed up and stick closed, preventing the tank from being able to vent through it.

Thanks for the info. I put a new cap on it yesterday and that’s when I discovered the back pressure.

 

[Hayabusa Wannabe]

What i this cap (OEM/aftermarket)? Is it vented? I am reading around here of ventless caps. (How does that even work?)