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Author Topic: Fuel Valve Switch doesn't turn off  (Read 1856 times)
Murrgh
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Posts: 122

Williamsburg, VA


« on: January 26, 2018, 04:28:50 PM »

So I found out today that when I turn my fuel valve to, "Off" - it doesn't actually turn off. I let my Valkyrie run for about 10 minutes in the "Off" position and nothing happened. I have a cover set rebuild kit, but I haven't put it on yet. Is it worth repairing this petcock, or going the Pingle route?

Thanks
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Pete
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Posts: 2673


Frasier in Southeast Tennessee


« Reply #1 on: January 26, 2018, 04:42:29 PM »

Rebuild it.
Also clean the check valve/ball real good.
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Blackduck
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Posts: 642


West Australia


« Reply #2 on: January 26, 2018, 05:32:04 PM »

Also check the knob/shaft is not binding on the Chrome cover, it can hold the ball of the seat.
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2001 Standard, 78 Goldwing, VRCC 21411
John Schmidt
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Posts: 15211


a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« Reply #3 on: January 26, 2018, 05:46:10 PM »

Personally, I'd bust for the Pingel. I know a number of owners always say how they've gone a gazilion miles on the factory petcock....kudos to them and their luck. The OEM petcock is the weakest link in the Valkyrie fuel delivery system and it's a known factor regardless of statements to the contrary. I have the remains of two OEM petcocks on the shelf, one replaced the other and each was "recovered" one time before I replaced it with a Pingel along with an external filter and DanMarc shutoff. That way some years ago and haven't had the first minutes trouble since. Your results may differ.  cooldude
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Chrisj CMA
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Posts: 14769


Crestview (Panhandle) Florida


« Reply #4 on: January 26, 2018, 05:49:36 PM »

Mine did the same thing. I rebuilt it. It messed up again in a year. I got rid of it for a Pingel.
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gordonv
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Posts: 5760


VRCC # 31419

Richmond BC


« Reply #5 on: January 26, 2018, 06:34:19 PM »

First, insure that you actually turned it off. While turning into each position, you should feel the ball drop into position.

Mine would not turn off when turned from On-Off. I would have to turn it from Res-Off, to insure that it was off. Other than storage, I never turn it off. I'm fully aware what hydro lock is and am causes ever time I press the start button, prepared to stop and not press it again if any unusual sound is heard.
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1999 Black with custom paint IS

Dale_K
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Posts: 91

Hot Springs Village, AR


« Reply #6 on: January 27, 2018, 07:41:13 AM »

I tried idling my bike until it stopped to test the fuel shutoff valve and it takes a REALLY long time before the motor shuts off.
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0leman
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Posts: 2292


Klamath Falls, Or


« Reply #7 on: January 27, 2018, 07:58:08 AM »

Try going for a ride, find a slope where the traffic is almost non existent.  Turn off gas, ride up the hill to see if your Valk will stop.  If it does, do a U-turn, turn on gas, do a bump start.   If it doesn't stop, you have a problem.  Not sure a cover set will fix the problem.  think it imaybe the manual shutoff not turning off.  May have to replace it or remove the rivets and turn it into a total manual petcock. 
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2006 Shadow Spirit 1100 gone but not forgotten
1999 Valkryie  I/S  Green/Silver
The emperor has no clothes
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Posts: 29945


« Reply #8 on: January 27, 2018, 10:27:50 AM »

I tried idling my bike until it stopped to test the fuel shutoff valve and it takes a REALLY long time before the motor shuts off.
A really long time  cooldude Even while riding it takes a couple miles.
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RonW
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Posts: 1867

Newport Beach


« Reply #9 on: January 27, 2018, 11:09:16 AM »

It takes a while idling to drain the carb. What I'm unsure of is when I ran outta gas ..... I thought it was too soon to use the reserve based on the odometer ..... I parked it on the side of the road without turning it to reserve, and after several attempts trying for nought to re-start, I let the bike sit for a while, turned on reserve, then hit the start button ..... and it started up. So how did the fuel get to the carbs without vacuum. The bike was parked not coasting on the highway.
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2000 Valkyrie Tourer
Murrgh
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Posts: 122

Williamsburg, VA


« Reply #10 on: January 27, 2018, 02:13:22 PM »

I tried idling my bike until it stopped to test the fuel shutoff valve and it takes a REALLY long time before the motor shuts off.
A really long time  cooldude Even while riding it takes a couple miles.

Wow, a couple of miles? Good to know.
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Jruby38
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Posts: 237

Oxford Mass.


« Reply #11 on: January 27, 2018, 03:15:18 PM »

 Like John said, crap can the OEM POS for a Pingel. Cheep Insurance against the expense and hassle of hydrolock. I did at the first leak 10 years and 100k miles ago.
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Firefighter
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Posts: 1165


Harlingen, Texas


« Reply #12 on: January 27, 2018, 05:33:23 PM »

I turn mine off while riding once in a while, use reserve also. Valk engines with six carbs don't just shut off. If you are at 50 or 60 mph the engine will slowly slow down, you will know, switch the valve back on and it picks right up.
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2000 Valkyrie Interstate, Black/Red
2006 Honda Sabre 1100
2013 Honda Spirit 750
2002 Honda Rebel 250
1978 Honda 750
da prez
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Posts: 4357

. Rhinelander Wi. Island Lake Il.


« Reply #13 on: January 28, 2018, 09:11:24 AM »

  Do the vacuum gage test. This is one of the few times I did agree with john somewhat. I prefer the oem. 

     Now , about oilllllllllllllllllllllllllllllllllllllllllllllllll.  2funny 2funny 2funny

                                                da prez
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Willow
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Excessive comfort breeds weakness. PttP

Olathe, KS


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« Reply #14 on: January 28, 2018, 03:55:43 PM »

Listen to what others have said.  Idling is not a good way to test as it takes a LONG time to empty the carb bowls.  About two miles riding down the road is fairly normal to start seeing signs.  It may be closer to 2.5 or 3 miles to completely die.

Your petcock is probably just fine.  Most are.  I have 185,000 miles on the OEM petcock.
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Ricky-D
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Posts: 5031


South Carolina midlands


« Reply #15 on: January 29, 2018, 08:30:58 AM »

Listen: If you think that shutting "off" the fuel and letting the engine run down, is an accurate predictor of the possibility of "hydrolock", well, you could be in for a rude awakening some day.

The reason I say this because this "test" reveals nothing about the workability of the fuel petcock.

If you are interested in seeing if your fuel petcock truly shuts off the fuel supply, you must disconnect the fuel line at the petcock and observe what happens.

Why do I say this? Well, it only takes a small amount of leaking to allow "hydrolock" to occur. Like a few drops per minute, or even less.

The engine cannot run on a few drops per minute, so when your engine starts sputtering, or whatever, what do you think this indicates?

Don't be fooled and think you are avoiding "hydrolock".


***
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2000_Valkyrie_Interstate
RonW
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Posts: 1867

Newport Beach


« Reply #16 on: January 29, 2018, 10:11:56 AM »

I've never understood why you have to throw empty beer bottles at people, Ricky-D. Not disagreeing with the substance of your post.
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2000 Valkyrie Tourer
Gryphon Rider
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Posts: 5227


2000 Tourer

Calgary, Alberta


« Reply #17 on: January 29, 2018, 10:15:09 AM »

There are really two valves within the OEM petcock.  The first valve is the ON-OFF-RESERVE valve, actuated by the hand knob.  There is no Honda kit to fix it.  The second valve is the vacuum-on valve.  When the engine is spinning (including when the starter motor spins it) intake vacuum opens the valve, allowing fuel to flow if the first valve is in the RESERVE or ON position.  This valve consists of a couple of rubber diaphragms, a vacuum diaphragm and a fuel diaphragm, which can fail.  If the vacuum diaphragm fails, the engine is starved of fuel.  If the fuel diaphragm seal fails, fuel will leak past it when the engine is not running IF the first valve is not OFF.  If the fuel diaphragm has a hole in it, fuel can pass through the hole and will drip out the small vent hole on the bottom of the petcock.  The "cover set" kit provides those diaphragms and other related parts.

Like others have said, turning off the fuel valve still allows the engine to run on the fuel already in the carbs, and if the bike is just idling, this can take a long time, maybe 10-15 minutes.  If the engine is under heavy load requiring a large twist of the throttle grip, it will use the fuel in the carbs quite quickly when you turn the fuel off.  Casual urban riding will allow the bike to travel 1/2 to 2 miles before sputtering.
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MarkT
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VRCC #437 "Form follows Function"

Colorado Front Range - elevation 2.005 km


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« Reply #18 on: January 29, 2018, 11:59:51 AM »

Yep.  I have modded both Jade and Deerslayer with a security system on the Dan-Marcs.  It doesn't activate unless you hit a hidden momentary sw after starting, that triggers a latch relay.  The relay also shuts down if the tilt relay, the kill sw, or the key are cycled. Sometimes I forget to hit the momentary sw on startup. Or I don't push it hard enough.  If it's not activated, the hidden blue LED isn't on.  The bikes always sputter at 1.3 miles.  They deliver the same mileage, 34mpg nearly always.  Except when riding with others that changes my style.  Esp. with the S.O. on her Magna. Then I get close to 50mpg and the bikes will get to 2 mi before sputtering.  Nice that I inadvertently check the Dan-Marc functioning randomly.
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Vietnam-474 TFW Takhli 9-12/72 Linebckr II;307 SBW U-Tapao 05/73-4
Bighead
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Posts: 8654


Madison Alabama


« Reply #19 on: January 29, 2018, 02:16:33 PM »

Like John said, crap can the OEM POS for a Pingel. Cheep Insurance against the expense and hassle of hydrolock. I did at the first leak 10 years and 100k miles ago.
It takes more than a bad petcock to cause Hydrolock......
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1997 Bumble Bee
1999 Interstate (sold)
2016 Wing
John Schmidt
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Posts: 15211


a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« Reply #20 on: January 29, 2018, 02:26:01 PM »

Like John said, crap can the OEM POS for a Pingel. Cheep Insurance against the expense and hassle of hydrolock. I did at the first leak 10 years and 100k miles ago.
It takes more than a bad petcock to cause Hydrolock......
+1   cooldude
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Bighead
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Posts: 8654


Madison Alabama


« Reply #21 on: January 29, 2018, 05:28:51 PM »

Like John said, crap can the OEM POS for a Pingel. Cheep Insurance against the expense and hassle of hydrolock. I did at the first leak 10 years and 100k miles ago.
It takes more than a bad petcock to cause Hydrolock......
+1   cooldude
John I find it funny how many think that a pingel alone will solve the hydro lock problem. And how many think the OaeM is the only cause of it coolsmiley
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1997 Bumble Bee
1999 Interstate (sold)
2016 Wing
Pete
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Posts: 2673


Frasier in Southeast Tennessee


« Reply #22 on: January 30, 2018, 07:03:47 AM »

If the oem petcock is allowing fuel to flow in the off position and no engine vacuum.
The off/on/res manual valve (ball check) is not seating properly and the fuel side of the vacuum diaphram is leaking or not sealed.

FIX BOTH - replace the diaphrams and clean the ball check valve and chamber.
You do not have to disassemble the ball check valve and chamber, you can lean it with a good cleaner after removing the diaphram by flushing thru the reserve and on ports and back flushing thru the diaphram port. Flush until it absolutely clean and works smoothly.

You may have a dirty gas tank if the ball check valve has crap in it, so clean the tank and filter screen or it will happen again.
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