Fuel leak - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 9 (permalink) Old 06-19-2012, 12:29 PM Thread Starter
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Fuel leak

I noticed my 1986 Vulcan 750 had a fuel leak in the petcock area. I replaced the petcock diaphram, took care of leak from petcock. Still noticed leakage from fuel line where they connect to petcock, replaced fuel lines. Still leaking. Does anyone have any ideas what I can do next before I replace the whole petcock ?
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post #2 of 9 (permalink) Old 06-19-2012, 12:55 PM
Crap, I WAS in 5th gear.
 
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Make sure you know where the leak originates. It may be the gasket to the tank, not the petcock itself.
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post #3 of 9 (permalink) Old 06-19-2012, 06:13 PM
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Garage
Those teflon washers are garbage, I bet it is that. Mine was newly rebuilt and leaked cause of them.
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post #4 of 9 (permalink) Old 06-19-2012, 07:04 PM
..have a vulcan good day!
 
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I had the same situation. Rebuilt petcock, Replaced fuel lines, leak corrected but now slight seepage which i traced to the petcock/tank gasket.
Hope this helps
Good luck
WilliamTech

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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post #5 of 9 (permalink) Old 06-20-2012, 08:32 PM
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On an 86, make sure its not the tank itself...my 85 had a few pinholes right by the petcock...I cleaned down to bare metal, then J-B Welded it...2000mi later, no leaks...on an older bike, may wanna pull the whole tank and not just assume the petcock. Its not hard, and worth checking.



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post #6 of 9 (permalink) Old 06-21-2012, 10:17 AM Thread Starter
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Thank you everybody for the help, but unfortunately while removing the fuel line from the rear carb, I accidently broke off the plastic nipple and there is probably no way to repair it. Has anybody ever had this problem ?
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post #7 of 9 (permalink) Old 06-21-2012, 10:26 AM
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Yes you can repair them Harley Ddavidson sell brass ones that fit. try this link https://www.vn750.com/forum/showthread.php?t=19832

Last edited by Swagman; 06-21-2012 at 10:30 AM.
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post #8 of 9 (permalink) Old 06-23-2012, 12:08 PM Thread Starter
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Thanks Swagman, I'll do this it'll save me alot of money
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post #9 of 9 (permalink) Old 06-23-2012, 12:42 PM
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Your welcome rkama354 we are here to assist
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