Urgggggggggg - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
From the gas tank to the carbs
All fuel system discussion

 
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post #1 of 5 (permalink) Old 02-29-2012, 04:59 PM Thread Starter
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Urgggggggggg

I DONT GET IT. My bike out of no where started leaking gas out of the carbs. it has never sat longer than three days and has never had any issues. I had the carbs pulled cleaned and put back in. and it is still doing it. However it doesnt always do it. Im lost but i have to ge it back together its 80 degrees here in sunny florida and ready to ride.

2006 Vulcan 750
Bone stock for now

future plans:
Ape Hangers
exhaust
lower
slim down all the lights
Smaller seat


Let me know if you have anything i might need

GO GATORS!
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post #2 of 5 (permalink) Old 02-29-2012, 05:17 PM
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Originally Posted by Helmdog58 View Post
I DONT GET IT. My bike out of no where started leaking gas out of the carbs. it has never sat longer than three days and has never had any issues. I had the carbs pulled cleaned and put back in. and it is still doing it. However it doesnt always do it. Im lost but i have to ge it back together its 80 degrees here in sunny florida and ready to ride.
sounds like a worn needle valve not seating properly,if you have replaced the gaskets and seals,one carb or the other could be letting too much fuel into the float bowls and over flowing through a vent or a vacuum port,or one of the inlet nipples may be leaking . can you see an exact location that it is leaking from?You may want to put it on the centerstand and level the bike to determine which carb is in fact leaking , would also inspect both fuel hoses for leaks .Another possibility is the petcock or the fittings on it may be leaking and running down and off the carbs.

Hope this gives you a few Ideas for places to check.




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post #3 of 5 (permalink) Old 02-29-2012, 10:28 PM
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Yes, put it on the centerstand, then find out exactly WHERE the leak is. The problem with the Vulcan is it has a vacuum petcock, and when you shut the engine off, you also shut off the gas supply to the carbs, so if it is the float needle, you may never find it that way.

You said you HAD the carbs worked on. That means there is a good possibility that whoever worked on them had no idea (or very little) what they were doing. Especially if it was done by a dealer. They give such jobs to high school kids.

You can bypass the petcock by removing the tank (just to get it out of the way, things are pretty tight around where the fuel lines connect to it) then get 2 tiny funnels (I've seen them at walmart) stuck one in each fuel line, and fill with gas. Then weight and see if any starts leaking, and if so, where.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
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post #4 of 5 (permalink) Old 03-05-2012, 05:19 PM Thread Starter
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Aweome I appreciate it. I eneded up just taking it to my buddys dad who is the owner and only mechanic at his motorcycle shop. Having two jobs is almost a must for me in this economy so my time to fix it is limited and well i need it for bike week lol.....Plus 100 dollars to pull the carbs and clean em all up and install will all new vaccum and gas lines i cant complan. Not even worth my headache for that price

2006 Vulcan 750
Bone stock for now

future plans:
Ape Hangers
exhaust
lower
slim down all the lights
Smaller seat


Let me know if you have anything i might need

GO GATORS!
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post #5 of 5 (permalink) Old 03-05-2012, 08:54 PM
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That's a great price for that much service.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
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1989 VN750 acquired December, 2008, 6,711 miles
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