Venting???

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Feb 21, 2015 | 06:41 AM

#11

martin10

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From: VA

If you trace the vent hose toward the back of the bike you will find a small plastic one way valve. Get rid of the valve and make sure your hose is not kinked anywhere. I had that valve go bad on a 96 Fatboy.

Feb 21, 2015 | 07:08 AM

#12

gotmeaharley

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From: Devon

Cheers Martin. I'll have a look.

Feb 21, 2015 | 07:49 AM

#13

multihdrdr

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From: Nor Cal

Quote:

Originally Posted by gotmeaharley

I read on another post that the reserve on the fuel tap bypasses the vacuum. Is that right?.

Vacuum is needed for any fuel to flow

Also, FYI

Your pressure relief vent is here? (below)...yes?

Also you can check your vented side gas cap (one-way from OUT to IN) vent by sucking (...really) on the bottom of cap to see if the check valve is allowing air to pass.

Feb 21, 2015 | 10:08 AM

#14

gotmeaharley

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From: Devon

Cheers for that. Where do you find those exploded diagrams, they're very handy. I've only had to take the left hand tank off so I'm assuming the vapour valve and pipe are on the right one. Only filled up twice since I bought the bike (British winters aren't worth riding in for the most part) so haven't even noticed if there is a pressure relief vent. Thanks very much for the input, it's muchly appreciated.

Feb 21, 2015 | 11:46 AM

#15

RANGER73

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From: Beyond Fucital

Quote:

Originally Posted by multihdrdr

How bout this...but again, this isn't your problem.

That's the cross over to stabilse pressure left to right side.

Feb 21, 2015 | 12:06 PM

#16

gotmeaharley

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From: Devon

I've got to say that the people on this forum are very helpful. It's a pleasure to be a member.

Feb 21, 2015 | 07:12 PM

#17

multihdrdr

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From: Nor Cal

Quote:

Originally Posted by RANGER73

That's the cross over to stabilse pressure left to right side.

Yep, I could see that when i researched the exploded view of that softail tank. Since the the left tank doesn't use a vented cap, that vent/vapor crossover is the only means provided for the left tank to be exposed to atmospheric pressure. Isn't that left cap also have Left-handed threads? I haven't handled any harley twin/dual tanks (softails), but that doesn't matter...once you know theory, you just apply it wherever you need it.

Hey Gotme, if PM your email addy or post here...I have a gift for you.
.

Feb 22, 2015 | 06:46 AM

#18

RANGER73

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From: Beyond Fucital

Quote:

Originally Posted by multihdrdr

Yes, left turn tread. This way when filling the tank your not putting the vented cap on the wrong side.
If you've got full tanks or over filled and the bike is on the jiffy stand during the warm weather the gas expands and could leak out the vent if it's on the left side.

Last edited by RANGER73; Feb 22, 2015 at 08:41 PM.