08' RXPX 255 Fuel tank pressuring up??

[Nick_R]

Just purchased an 08' RXPX 255 with 17 hrs on it yesterday. Bike is literally like new inside and out. One thing I am noticing right off the bat is that the fuel tank is pressuring up more than what I would consider normal. When I first pulled the cap off it almost blew it out of my hand! I continue to check it periodically and it builds pressure fairly quick... Being new to the game, is this normal? The sticker by the cap says it should be a vented cap but it doesnt look like it.. I looked for a vent line off of the tank but couldnt find one.. Any ideas? Thanks!

[JohnnyMac]

I noticed that my Yamaha and both my newer SeaDoo's do it. Same thing, it nearly blows the cap out of my hand. I was surprised my self, because they all say vented cap.

[greenbullet]

Just leave the cap vented or not tight when un attended. I replaced the hose check valve and everything and it still does it. Has been like this for 4 years

[Nick_R]

Thanks for the info... My main concern was really whether or not the excess pressure would effect the engine performance. I did notice it was having trouble idling and wasnt sure if this could have been the issue.

[greenbullet]

I just tighten it when I'm riding. When the ski is on the trailer or lift I crack it to release pressure of any