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Author Topic: NCR gas cap vent tube?  (Read 1770 times)
speed merchants
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« on: November 03, 2011, 06:24:14 PM »
Just purchased a NCR gas cap, came with a vent tube attached, does anyone know where to put the vent tube
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ducpainter
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« Reply #1 on: November 04, 2011, 03:10:55 AM »
On older bikes that used a tube on top the tube would be routed to the hollow steering stem.

On a monster I'd route it between the gauges and the triple.
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« Reply #2 on: November 09, 2011, 03:05:25 PM »
Quote from: speed merchants on November 03, 2011, 06:24:14 PM
Just purchased a NCR gas cap, came with a vent tube attached, does anyone know where to put the vent tube

It should just be a very small vent tube that stays under the cap assembly. You don't connect it to anything.
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Anthony Creek
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« Reply #3 on: November 09, 2011, 03:14:52 PM »
I have a TWM gas cap with a tiny clear tube attached to the rear of the assembly. It leads air into the tank to avoid vacuum. Maybe the same as yours....

It doesn't has to go anywhere, but when I emailed and asked the manufacturer they said position 2 based on the photo below.

Not 100% sure if that hole has the same function (overflow drain) on US bikes as on my Euro bike...
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desmoworks
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« Reply #4 on: November 09, 2011, 03:18:20 PM »
Quote from: stopintime on November 09, 2011, 03:14:52 PM
I have a TWM gas cap with a tiny clear tube attached to the rear of the assembly. It leads air into the tank to avoid vacuum. Maybe the same as yours....

Yeah, the NCR cap is the same.
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Anthony Creek
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speed merchants
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« Reply #5 on: November 10, 2011, 08:10:18 AM »
Thanks everyone for the reply, I feel alot better knowing about it.
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ZachDDill
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« Reply #6 on: November 11, 2011, 05:37:51 AM »
Quote from: stopintime on November 09, 2011, 03:14:52 PM
I have a TWM gas cap with a tiny clear tube attached to the rear of the assembly. It leads air into the tank to avoid vacuum. Maybe the same as yours....

It doesn't has to go anywhere, but when I emailed and asked the manufacturer they said position 2 based on the photo below.

Not 100% sure if that hole has the same function (overflow drain) on US bikes as on my Euro bike...





On my '99 M750 I have a problem where somehow the tube is blocked up and my tank gets pressurized, do you know how to fix this?
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« Reply #7 on: November 11, 2011, 08:12:58 AM »
Quote from: ZachDDill on November 11, 2011, 05:37:51 AM

On my '99 M750 I have a problem where somehow the tube is blocked up and my tank gets pressurized, do you know how to fix this?

I have never had that problem, so I don't know.

Maybe you could check, take apart, clean, blow the vent hole in the lock assembly itself? (above hole 2)
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