Help. Leaking Out of the Intake. Will Not Start. - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 18 (permalink) Old 05-24-2013, 08:35 PM Thread Starter
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Help. Leaking Out of the Intake. Will Not Start.

Hey guys, been on here a couple other times for help. Same problem. It's an '88 and I've always had trouble starting it.

I just got a new battery and it turns over great, but doesn't want to run. It sounds like there's hope, but it's just a tease.
Gas pours out of what looks to be the intake down the radiator after a touch or two to the start button.

I have spark and compression it seems and I had the carb rebuilt/tuned last August at a local dealer and it ran good.

I ran it over winter break (December) and then I tried a couple months ago and had no luck. I went back to college then came back and now it's just dead it seems. I tried push starting but it wouldn't enter second gear AT ALL.

Any ideas? I just want to get it started so I can ride it a bit before I sell it. It needs a bit too much work for me.
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post #2 of 18 (permalink) Old 05-24-2013, 09:04 PM
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Couple guys here in New York. Maybe someone could give u a hand

"Show me a man who makes no mistakes, and I'll show you a man who doesn't do things." Theodore Roosevelt."

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post #3 of 18 (permalink) Old 05-25-2013, 02:33 AM
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If it's not the carbs, might be the petcock leaking gas into the vacuum port.

You could unplug the fuel lines and vacuum line and see if fuel pours out. You might have to apply some vacuum and see if fuel comes out only through the lines, but be warned, if you suck on the vacuum hose to apply vacuum you could end up with a mouthful of gas... yes, it happened to me lol.

If all is well there, it's very likely the carbs, probably the floats... should check needles and seats and set the float level.

Why check the petcock first? 'Cause it's the easiest to get to and because taking out the carbs is a pain in the ass.

This happened to my bike at some point... I don't remember 100% but I think it was the petcock leaking through the vacuum port. Anytime I had a carb problem I took the carbs out and did a full cleaning and put them back together... sometimes 2 or 3 times before the problem went away.

1985 VN700 unknown mileage (over 33K)

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Relocated R/R
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post #4 of 18 (permalink) Old 05-25-2013, 07:16 AM
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+1

Also for knowledge, you will not be able to shift into 2nd gear unless the bike is moving, probably at least 7-8 mph minimum. this is the way the Positive Neutral Finder in the transmission works. It prevents any gear other than 1st or neutral from being selected below a certain speed

i usually shift out of 1st around 15, and even then it occasionally will go to neutral instead of 2nd
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post #5 of 18 (permalink) Old 05-25-2013, 08:08 AM
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Where are you located?
can you post a photo of where the fuel is leaking out of?
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post #6 of 18 (permalink) Old 05-25-2013, 12:30 PM
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Quote:
Originally Posted by michiganteddybear View Post
+1

Also for knowledge, you will not be able to shift into 2nd gear unless the bike is moving, probably at least 7-8 mph minimum. this is the way the Positive Neutral Finder in the transmission works. It prevents any gear other than 1st or neutral from being selected below a certain speed

i usually shift out of 1st around 15, and even then it occasionally will go to neutral instead of 2nd
I guess mine is just not working then lol sometimes it takes a couple of tries to get into neutral instead of second gear while the bike is stopped. Unless it was different with the 85 model...

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
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post #7 of 18 (permalink) Old 05-25-2013, 01:08 PM
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Quote:
Originally Posted by Ceal View Post
I guess mine is just not working then lol sometimes it takes a couple of tries to get into neutral instead of second gear while the bike is stopped. Unless it was different with the 85 model...
My '86 shifts the same as your '85.
....always has.

+1
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post #8 of 18 (permalink) Old 05-25-2013, 01:17 PM
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if you have gas coming out of your intake.... does the petcock have an off?

Turn it off, and drain the bowl, screw on bottom. Then turn fuel back on and see if same issue... if so, likely float on carb, sometimes by draining the carb and allowing the needle valve for float to reseat u get lucky

good luck

kenny

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post #9 of 18 (permalink) Old 05-25-2013, 01:19 PM
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also pull plugs if wet then they are getting too much fuel (makes sense if float stuck and gas keeps coming in)

kenny

Merc
2000 Vulcan Drifter 800
Roadhouse classic 2 > 1 exhaust
Okie Smokie intake config
Changed jets
52K miles or so, always going up
Corbin Seat
Painted flat black winter '12
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post #10 of 18 (permalink) Old 05-25-2013, 03:55 PM
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Quote:
Originally Posted by WilliamTech View Post
My '86 shifts the same as your '85.
....always has.

+1
Maybe the earlier models don't have it then... or both of our bikes' positive neutral finders are shot lol.

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
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