I sprung a leak!! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 08-23-2011, 12:31 PM Thread Starter
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I sprung a leak!!

I just bought a 1984 ZN700 about a month ago. I have rode it to and from work about a dozen times with no problems. I took it for my first longer ride this weekend, and started leaking gas! I rode about 200 miles, and then the bike sat for about 2 days, when I took it out the next time i realized that I was leaking gas pretty bad. It is coming out of the airbox....There seems to be a hole drilled into the bottom of the airbox, not sure if thats stock. If I shut the gas off it stops, but as soon as I turn the gas back on it's right back to leaking! Any thought or ideas??? Thanks!!!!

Chris

Last edited by MuchmoreMusic; 08-23-2011 at 01:58 PM.
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post #2 of 6 (permalink) Old 08-23-2011, 01:35 PM
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Sounds like the vacuum diaphragm in the petcock is toast. If it is torn/out of place, it'll run gas down the vacuum line. It also would result in some trouble running smoothly.

Try pulling all of the fuel lines. If everything in the petcock is OK, you shouldn't get any gas in any fuel position.

If the petcock checks out, I'd guess sticky float in the carb. Try tapping the bottoms with a rubber mallet a few times to free it, then run with a strong mix of Seafoam in the gas for a couple of tanks.

Best of luck.
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post #3 of 6 (permalink) Old 08-23-2011, 01:54 PM Thread Starter
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Thanks Hot Rod....I will try that out, and see what happens!
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post #4 of 6 (permalink) Old 09-17-2011, 04:30 PM
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what happened here? I'm curious I have this same problem and I took my bike apart. I havent tried messing with the floats is that where I should go next?

1985 Vulcan 700 - Fenrir

No regrets. Thats my motto, that and everybody wang chung tonight.
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post #5 of 6 (permalink) Old 09-17-2011, 08:35 PM
If only it had 6th gear..
 
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If it's a stuck float it will flood out badly, your plugs will be wet and you may be able to run it by revving but it won't idle or it will idle very poorly.

Dave

Mods:
Jetted, shaved & coastered
Home made under-tank single filter
Converted ACCT's to manual (thanks wib714)
Dual vac lines on petcock (my cure for ticking)
LED tail/plate lights
Relocated helmet lock to license plate

Added stuff:
Customized hard bags w/ lights
Chrome levers
Hellcat windscreen
LED running lights
Home made 'Vita-Volt' meter
Foot rests on engine guard
Tunes

Hmm....she was on the back when we left.... ??
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post #6 of 6 (permalink) Old 09-20-2011, 03:22 PM
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I havent been able to start it in a while because the starter has gone bad, but the other day when i stepped outside i saw this big puddle and fuel dripping too. I'm having trouble getting the carb apart because the screws are starting to strip.

1985 Vulcan 700 - Fenrir

No regrets. Thats my motto, that and everybody wang chung tonight.
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