Please read! Need Help!
- jus1975
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- KZQ
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"It didn't shut off fuel and fuel came out of both tubes from the petcock." By both tubes I assume you mean the vacuum port and the fuel port. I've never had much luck rebuilding petcocks, mostly because the potmetal is often corroded to the point that the seals can't work properly.
If you use the Pingle just loose the tee from the vacuum ports on the intakes and join the ports together with one tube.
Pretty sure the correct size fuel line is 5/16" while the vacuum line is 1/8", or thereabouts.
Hope that helps.
KZCSI
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1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
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1985 ZN1300
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- jus1975
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- Z1109R Fin
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Z1000R ´83...Slightly modified...
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- Patton
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Something simple but I dont know. 73 Z1, how do the vacuum lines, fuel lines, and vent lines go. What size are they and how do they hook up to the petcock. I rebuilt the petcock and is there a certain way the little plastic piece goes in. It didn't shut off fuel and fuel came out of both tubes from the petcock. I bought the pingel and it only has one. Is that the correct one and what do you do about the vacuum line if you use the pingel. I would like to use the stock petcock. I am restoring it.
"Little plastic piece" indicates a stock manual petcock (not vacuum-operated) and might be 180 degrees off. Assure small spring isn't missing inside between petcock handle and the plastic piece.
Four vacuum nipples on carb holders (between engine and each carb) should each have a rubber cap that remains in place during normal operation. (Caps are removed to synch carbs).
Upper two carb Tees are for vent lines routed to exit into open air underneath seat.
Lower two carb Tees are for fuel lines.
"ON" or "RES" position should allow fuel flow from both petcock outlets.
Single outlet Pingel requires a Tee into twin fuel lines to carbs. Am unaware whether Pingle offers a vacuum-operated version.
New small soft 1/4" fuel line should fit snugly, but might require 5/16". Automotive type fuel line is too stiff, thick and heavy, difficult to work with and route.
With dual-outlet petcock, should use a separate inline fuel filter in each line.
With single-outlet petcock, may use an inline filter before Tee to twin fuel lines going to carbs. Or after the Tee in each line before reaching carb.
Good Luck!
1973 Z1
KZ900 LTD
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- wiredgeorge
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wiredgeorge Motorcycle Carburetors
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- jus1975
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- Patton
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I have the manuals but it doesn't show the petcock lines. If both outlets on the petcock are for fuel do you just hook one to one side on the carb and one to the other.
Yes, that is correct.
1973 Z1
KZ900 LTD
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- wiredgeorge
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wiredgeorge Motorcycle Carburetors
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