Author Topic: Tank Vents  (Read 1258 times)

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Offline JDM

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Tank Vents
« on: July 06, 2015, 12:52:51 pm »
This is how you disable the tank vents. Just so you know, the cap you see in these photos came off a very clean wrecked garage queen with 16,000 mi on the odometer. HTH JD                                                                                                                                                                         

1st----- photo shows the bottom of the filler cap. You remove the two screws and gently remove the lock mechanism. Warning, be careful to not dissemble any other part.... This is all you need to do to get at the vent valves.

2nd---- photo shows you the first vent valve. It's the orange rubber disc. You remove the 1st valve. Just under it, you remove the 2nd valve.

3rd---- photo shows the two valves removed. Reassemble the fuel cap being careful not to allow the lock tumblers to rotate out of sync position.   
 

Offline Engraverwilliam

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Re: Tank Vents
« Reply #1 on: July 06, 2015, 03:17:56 pm »
what is the purpose of this mod?

Offline Steve in Sunny Fla

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Re: Tank Vents
« Reply #2 on: July 06, 2015, 03:22:31 pm »
to prevent the tank from building to much pressure or vacuum, an common problem af bikes that are starving for fuel.

nice pics JD  :beerchug: :beerchug:

 I only removed the lowest most valve (the first one you encounter). My thinking was that I'd still like some fuel control in the event of a tipover. Steve
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Offline DC Concours

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Re: Tank Vents
« Reply #3 on: July 06, 2015, 04:19:44 pm »
Great post.

What part clogs up causing the vents to fail. Mine looks all clean like in the picture.

Offline jettawreck

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Re: Tank Vents
« Reply #4 on: July 06, 2015, 05:34:57 pm »
Mine both looked perfect too. Removed them both. No more tank venting/whistling, other than that I haven't seen any change in performance. I have filled the tank to the rim on several occasions since the removal, but have not seen any leakage out of the cap or drain vent/tube.
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Offline Engraverwilliam

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Re: Tank Vents
« Reply #5 on: July 06, 2015, 05:38:01 pm »
After filling and after heavy stops or when taking the bike off center stand, I get a huge wiff of gas.
I am wondering if its the seal or this valve or what?
I know it is coming from the lid because nothing else on the bike smells of gas (thankfully)
I am thinking that the rubber donut is old?