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Valkyrie Riders Cruiser Club > General > 1500 Tech Board > close call
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Author Topic: close call  (Read 1795 times)
cajundood
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Posts: 160


Down in da Swamps of Louisiana
« on: October 22, 2012, 10:41:21 AM »
just got off of a 2300 mile trip to the ozarks and bike performed great (even for a darksider)
About a year ago after reading posts about hydrolock i bought a nice pingle style petcock to replace  aging one just never changed it. well......yesterday i went to start the bike and I heard the telltale "clunk".... Sad Sad
I immediately released the starter switch, & removed the plugs.
I drained the tank and removed the oem petcock. went to install the chrome pingle style one and it wouldnt fit.... Embarrassed Embarrassed
i just happen to have a K&L rebuild kit, so i rebuilt the old one. pretty much destroyed the filter removing it, but was able to get another one from Fudd (thanks buddy)  cooldude
-------There is a question hidden here somewhere---------
i'm getting ready to go back with the rebuilt valve but am unsure as to whether or not to reconnect the vaccuum line or just block it off. i've seen stories and opinions about to de-smog or not de-smog.
is there more to just blocking the lines in a desmog or is it that simple???

oh......i don't think the starter gear broke.......i got used to just bumping the starter at first for obvious reasons. (glad i did) So I think i am good.
It was a scary wake up call though.
D00D
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Chrisj CMA
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Posts: 14799


Crestview (Panhandle) Florida
« Reply #1 on: October 22, 2012, 11:04:32 AM »
If the valve (vacuum side) is functional it will not flow any gas without the vacuum line hooked up.  Others have turned the thing into a manual valve by internally blocking the diaphram open so its a free flow valve that you have to turn off every time,

If you are concerned just turn the swith off after every ride until you get the right Pingel
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dano1946
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Posts: 77

madison, wi
« Reply #2 on: October 22, 2012, 11:30:51 AM »
Being new to the Valk I don't understand what this pertains too. Could you enlighten me - thanks.
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Gryphon Rider
Member
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Posts: 5227


2000 Tourer

Calgary, Alberta
« Reply #3 on: October 22, 2012, 11:36:33 AM »
If the vacuum valve allows fuel to flow right now, there is no advantage to changing the valve to full manual.  It's only once it's failed and a leaking diaphragm causes the valve to not open fully (or at all) that you may want to convert it to full manual until you can either install a cover set (which includes the diaphragm), or replace the valve entirely.  For more information, read my post linked to here:
http://www.valkyrieforum.com/bbs/index.php/topic,37577.0.html
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mmurffy03
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Posts: 791


03 standard

toms river new jersey
« Reply #4 on: October 22, 2012, 11:56:23 AM »
have you thought about what you are going to do about the other huge issue you have if you pulled the pulgs and found gas in a cylinder its not just the petcock at fault here the cyl with gas in it must have a bad or stuck open float in it  or a bad needle and seat fixing the petcock is only half the repair job it takes both the petcock and the float in the carb to have true hydrolock happen so just fixing the petcock wont stop the fuel that is in the float bowl from seeping into the cyl every time the vacuum is cut off when the engine is shutoff ? im sure others will comment on this issue or am i confused on this issue im not a full time mechanic but have turned a few wrenches in my day
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cajundood
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Posts: 160


Down in da Swamps of Louisiana
« Reply #5 on: October 22, 2012, 12:09:58 PM »
Quote from: mmurffy03 on October 22, 2012, 11:56:23 AM
have you thought about what you are going to do about the other huge issue you have if you pulled the pulgs and found gas in a cylinder its not just the petcock at fault here the cyl with gas in it must have a bad or stuck open float in it  or a bad needle and seat fixing the petcock is only half the repair job it takes both the petcock and the float in the carb to have true hydrolock happen so just fixing the petcock wont stop the fuel that is in the float bowl from seeping into the cyl every time the vacuum is cut off when the engine is shutoff ? im sure others will comment on this issue or am i confused on this issue im not a full time mechanic but have turned a few wrenches in my day
actually i think its the diaphragm that failed and allowed the fuel to flow down the vaccuum line into the cylinder. i rebuilt the oem petcock and hope that this corrects the problem. I am however gonna reconnect the vaccuum line to the petcock rather than blocking it off for the simple fact that i do not faithfully turn off the fuel everytime i stop the bike. matter of fact "I NEVER" turn off the fuel whether it be 1 hour or 1 week!
perhaps i've been skating on thin ice by not doing it.....but its such a hassle.
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mmurffy03
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Posts: 791


03 standard

toms river new jersey
« Reply #6 on: October 22, 2012, 12:40:01 PM »
was the fuel in the #6 cylinder?
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Gryphon Rider
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Posts: 5227


2000 Tourer

Calgary, Alberta
« Reply #7 on: October 22, 2012, 12:55:46 PM »
I hadn't considered failure of the smaller diaphragm, the one that actually normally contacts the fuel.  What SHOULD happen if that one fails, is that leaking fuel drains out the weep hole in the bottom of the fuel valve, rather than flowing down the vacuum hose.  Was the weep hole blocked?
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mmurffy03
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Posts: 791


03 standard

toms river new jersey
« Reply #8 on: October 22, 2012, 01:04:58 PM »
same here never thought about reverse flow of fuel out of vacuum line
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John Schmidt
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Posts: 15248


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

De Pere, WI (Green Bay)
« Reply #9 on: October 22, 2012, 01:17:57 PM »
Dood, keep in mind that a normal operating OEM petcock won't work without that vacuum line attached. If it does allow fuel to pass with it not hooked up, then your petcock is faulty. Only after the internals have been blocked open to operate as a manual petcock will it flow fuel without the vacuum attached.
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cajundood
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Posts: 160


Down in da Swamps of Louisiana
« Reply #10 on: October 24, 2012, 05:29:46 PM »
Quote from: mmurffy03 on October 22, 2012, 12:40:01 PM
was the fuel in the #6 cylinder?
this was my follow up on this.....rebuilt petcock and before i decided to reinstall the tank, for shitz n giggles removed all six plugs and hit the starter... Shocked...............................WOW Shocked Shocked
about an ounce of fuel shot 20 ft across my shop out of the number 6 cylinder. Cheesy

well.......gears are evidently ok...... disaster avoided cooldude

so now i must determine whether or not the cylinder filled through the vaccuum line(fixed) or through the carb.

will keep posted......

DOOD
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cajundood
Member
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Posts: 160


Down in da Swamps of Louisiana
« Reply #11 on: October 24, 2012, 06:27:03 PM »
diaphragm was bad.  cooldude
before installing the tank, i put about 1 gallon in it and turned the petcock to reserve. no fuel. Embarrassed
but then i though about it..... ???...thats what its supposed to do. hooked up a vaccuum line and sucked a lil...fuel flowed. Grin

going back to when i removed the tank it had about 3 gallons of gas. i set the tank on the bench and turned on the petcock and it flowed freely into my gas can. (which i realize now wasn't supposed to happen)

so two plusses cooldude cooldude

should be ready for my upcoming rides this weekend.....mid to high 50's....ohhhh yeah   Cheesy

DOOD
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cajundood
Member
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Posts: 160


Down in da Swamps of Louisiana
« Reply #12 on: October 29, 2012, 07:22:03 AM »
ok....somethings gone amiss  Sad
rode this weekend and the fumes got me high as a kite... crazy2
returned home and before i shut off the motor i moved the oem fuel selector to the "off" postition.
bike continued to run, and run and run.....hmmmm
killed the motor and put the bike in the garage.
Next day garage was full of gas fumes and there was a puddle of gas on the floor under the bike.
THIS IS NOT GOOD!!
evidently the oem petcock doesnt shut off the fuel like its supposed to & the new diaphragm isnt working either.
so i guess my next option is to go to an electric shutoff....

any thoughts on this???  Embarrassed
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Blackduck
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Posts: 642


West Australia
« Reply #13 on: October 29, 2012, 03:58:28 PM »
When you changed the diaphragm did you change the cover as well? There is a very fine bleed hole in the cover and if it blocks it will not release the vacuum and holds the valve open.
Had it happen to me.


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2001 Standard, 78 Goldwing, VRCC 21411
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