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Vacuum Petcock
- glennpl
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I tried to order a new one, but they are a discontinued item. Getting desperate.
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- MFolks
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1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- KZ650
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- jimstan
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The Vacuum is only used to let the gas flow when the engine is running.
All (99%) our petcocks are gravity feed.
Pingle makes a replacement, which needs an adapter.
www.pingelonline.com/powerflo_application_frames.htm
Also I'll add that Z1 has inexpensive manual operated
petcocks that work fine, so long as you remember to turn them on and off. You need an adapter plate with it, but all together you won't spend more than 30-40 dollars. Pingel petcocks (top of the line) cost more $80-(90 plus adapter.
With a manual petcock you will need to put a cap on the vacuum port on the carb; size 7/32" rubber cap.
Hope this helps
JIM
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- Patton
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Assure vacuum line from carb to petcock is in good shape, not cracked or split or leaking or kinked, and is firmly attached at both the carb nipple and the petcock nipple. The vacuum petcock won't properly function without the correct vacuum being supplied to it from the carb.
Assure fuel tank is properly venting. Test run with cap ajar (not fully snapped down) to see whether problem continues. The issue might possibly be an obstructed vent in the fuel tank cap casuing fuel starvation (bike "runs out of gas"). Petcock can't flow if no gas is getting into it from the fuel tank.
Remove petcock from tank and clean the screens on the fuel pick-up tubes, which if clogged, won't allow gas into the petcock.
If fuel tank has grit or crud inside, it may require flushing out to prevent the suspended matter from hovering about and collecting on the petcock pick-up tubes while the engine is running. And not allowing gas into the petcock.
Also check in-line fuel filter to assure it's still allowing sufficient fuel to pass through and on into the carb.
Good Luck!
1973 Z1
KZ900 LTD
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- KZ_Joe
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- Check us out - governorsfootguard.com
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Home of the Free BECAUSE of the Brave!
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- Wild and KZ Guy
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The thing bolted right on, no mods necessary. Works great!
I am running pods, so I have no airbox, don't know if that would've got in the way or not.
When I got mine, I tested it; I blew thru the outlet while applying vacuum with my vacuum 'gun'. It took so little vacuum, that it barely registered on the gage, when it 'flowed'. It has a reserve position also; I wondered if that was always on, but upon testing, found that was also controlled by vacuum - which is great, because if I run on reserve, then forget to switch the petcock back, I don't have to worry about gas continuing to be delivered to my carbs.
1 pic of old/original petcock, 1 pic of the new one installed.
Highly recommended
Hope I helped someone.
A couple of Old School Minibikes
1980 LTD KZ650 E1
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- Wild and KZ Guy
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A couple of Old School Minibikes
1980 LTD KZ650 E1
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- Locozuna
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I blew thru the outlet while applying vacuum with my vacuum 'gun'.
One handy tool to have! :blink:
Congrats on your fuel flow!! :laugh: GLuck!
KZ900LTD, KZ750LTD, KZ650, 72'Triumph Trident
"Over the Mountains
Of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride,"
The shade replied
"If you seek for Eldorado!"
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- Wild and KZ Guy
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But I bet my old girlfriend could create more suction :whistle:
A couple of Old School Minibikes
1980 LTD KZ650 E1
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- Tommotbird
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Triumph Thunderbird Sport
Triumph Legend
Lambretta SX150
Moto Guzzi V11 Sport
1981 KZ650CSR HI
KZ1100 A2 x 4
Z1 Classic
KZ1000 LTD K1 1981
KZ750 LTD H2 x 4
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- Locozuna
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Cool!
But I bet my old girlfriend could create more suction :whistle:
Refresh my memory....
Is her number still 867-5309?
Jenny Jenny!
KZ900LTD, KZ750LTD, KZ650, 72'Triumph Trident
"Over the Mountains
Of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride,"
The shade replied
"If you seek for Eldorado!"
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