Can someone plese tell me what these are for?

2565 Views 15 Replies 8 Participants Last post by fog, Aug 25, 2007

ddenn35

Discussion Starter · Feb 6, 2007

These tubes have been buggin me for a while. What the hell are they for!?

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1 - 16 of 16 Posts

Lucky#13

· #2 · Feb 6, 2007

They go to your fuel tank .

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fog

· #3 · Feb 6, 2007

They are the vapor recovery system piping for a CA model . they connect the tank to a charcoal canister and a vapor pump. There should be hoses connection those pipes to the front of the tank.

FOG

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PontiacJack

· #4 · Feb 6, 2007

I think one of the things the tubes are for is to prevent vacuum from deforming your tank.

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knightslugger

· #5 · Feb 6, 2007

PontiacJack said:
I think one of the things the tubes are for is to prevent vacuum from deforming your tank.

I'm sorry... what?

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ddenn35

Discussion Starter · #6 · Feb 6, 2007

Sooooo.... they must not be to important; i rode the bike from florida to georgia

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knightslugger

· #7 · Feb 7, 2007

if you've got the connections on the front of the tank, connect them anyway.

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I told you whatthey are there are for , you judge the importance. you will leak fuel out of the un plugged tank nipples. if you cap them both your tank won't vent and you'll hav efuel starvation.

FOG

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ddenn35

Discussion Starter · #9 · Feb 7, 2007

the tank has been filled up plenty of times and haven't seen or smelled gas. so i guess its not that important. was just wondering what they were for, thanks for the feedback

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fog

· #10 · Feb 7, 2007

You may have a 49 state tank (w/out th nipples) or someone already plugged them.

FOG

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Kaw89_III

· #11 · Feb 12, 2007

Fog, are those only on CA bikes? ???

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Lucky#13

· #12 · Feb 12, 2007

yes.

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AntiAndy

· #13 · Feb 12, 2007

I have a cali tank, someone gutted all my smog/fuel emmisions stuff, and the bike leaked fuel forward under hard breaking, i was going to make a vent and all that, but then just ended up sticking a hose on that and plugging a hose, with a razor blade underneath my seat incase the bike ever stopped running due to preasure from it being plugged, never happened,still plugged.

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fog

· #14 · Feb 13, 2007

AntiAndy said:
I have a cali tank, someone gutted all my smog/fuel emmisions stuff, and the bike leaked fuel forward under hard breaking, i was going to make a vent and all that, but then just ended up sticking a hose on that and plugging a hose, with a razor blade underneath my seat incase the bike ever stopped running due to preasure from it being plugged, never happened,still plugged.

You probably have a leaky tank cap.

FOG

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mievil

· #15 · Aug 25, 2007

Sorry to bring this from the dead.

While pulling the tank from my bike I saw these two lines coming from the tank to the evap canister. I made a mental note as to which lines went where, and shortly after pulling the lines, forgot where I placed that mental note.

So I've got two lines coming from the bottom of the front side of the tank. This is for reference a CA model. One is marked with a red dot, one with a blue dot. From the bottom of the tank looking topside, the red dot is on the right side, and the blue is on the left side. But I see that the picture above shows a red dot on the left side of the actual bike (not the tank). Is this the correct orientation? Do I need to actually cross-over the lines from the tank to the bike? Or are they just straight through without the cross-over?

I don't want to bring up the whole are they needed or not debate. I just want to know the orientation. I know one line goes to the bottom of the evap canister, and one to the top. Just not sure which is which.

Much thanks.

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fog

· #16 · Aug 25, 2007

It don't matter much , Both are open to the air inside the tank.

FOG

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