Question about 2005 kawasaki VN 800 Vulcan Classic

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I have a 2005 classic vulcan 800 and gas is shooting out of the over-flow hose and the little clear plastic over-flow bottle is black and it won't start.

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Black means your gas flow washes away oil. Now where thst comes from cant tell you from 5000 miles away. But check out your oil level and signs for leaks around the carb and cilinder heads. Another practical but time spending work is to empty your radiator fluid and see the colour of it. if dark and "soapy"means you got a leak somewhere inside. Gasket? Worn pressure cilinder head springs? Can't tell for sure.

Posted on Sep 06, 2010

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Posted on Jan 02, 2017

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1 Answer

2003 Kawasaki Vulcan 800 classic has a fuel leak from the carburetor


Hi, Carlos and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
9. Contaminated fuel tank.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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KAWASAKI VN800 Service Manual
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Jun 12, 2017 | 2003 kawasaki VN 800 Vulcan Classic

1 Answer

Why won't the fan start on a 2000 Vulcan 800


Sit at a traffic light till the temp reaches about 220, it should start about then. My fan has come on 3 times in 8 years.

Mar 17, 2012 | 2000 kawasaki VN 800 Vulcan Classic

1 Answer

2005 vulcan 800 will only run with choke on cuts out when you give it gas


the pilot(idle) jet is clogged,need to do a good carb clean/rebuild(carb kit).that should take care of your problem.hope that helps.

Feb 21, 2011 | 2005 kawasaki VN 800 Vulcan Classic

1 Answer

Hose on bottom of bike leaking gas out of it


is it the actual gas line, or just the tank over flow ,, if you filled the tank to much it will leak out a little

Aug 03, 2010 | 1996 kawasaki VN 800 Vulcan Classic

2 Answers

How do I clean the carburetor on a kawasaki vulcan?


carborater clean on the outside and fuel cleaner in the gas tank will do it

Apr 07, 2010 | 2005 kawasaki VN 800 Vulcan Classic

1 Answer

Gas leaking, but not sure where


The gas valve should be shut off too. Sounds like floats in carb. are stick up not shutting of gas flow.

Sep 26, 2009 | 2000 kawasaki VN 800 Vulcan Classic

1 Answer

My 2000 Vulcan 800 Classic has gas in air filter


Hi and welcome to FixYa,

Your posted description indicates a carb overflow and that the carbs require a pulldown, disassembly; soaking in carb cleaner, cleaning the jets, vents, holes, ports and the walls of the bowl and inner body for the varnish like gunk of old/stale gasoline specially the fuel inlet valve.

As fuel is fed to the carbs,  the floats in the carb's bowl would rise up and engage the inlet cutoff valve closing the inlet port and therefore no further fuel would flow in. Fuel overflow would then indicate possibly that:
  • the valves are not closing;
  • their is an obstruction along the inlet ports and blocks closing of the valves;
  • floats are stuck open or punctured;
  • the float height would require adjustments;
  • necking, ridges, grooves, scratches exist on either the valve or the port allowing fuel entry even if closed.
All of the above would require a pulldown of the carbs for inspection, further cleaning or applicable repairs/rebuilt as initially described.

Good luck and thank you for asking FixYa.

Aug 17, 2009 | 2000 kawasaki VN 800 Vulcan Classic

3 Answers

Cant find oil dipstick or spy glass on 03 vulcan 800 classic


on my 1999 vn 800 the site glass is just under the kick stand..you will need some one to hold the bike level while you look at the oil level or stand it next to a wall or something to check the level, they are the same up to the 2005 models..

Jul 24, 2009 | 2001 kawasaki VN 800 Vulcan Classic

1 Answer

SHOOTING GAS OUT OF RUBBER LINE FROM TOP OF CYLINDER HEAD


Are you sure it's not gas mixed with oil? Sounds like the carbs are overflowing and filling the crankcase with a gas/oil mix. The rubber hose at the head should be for exhaust blow-by fume recirculation.

Jul 02, 2009 | 1998 kawasaki VN 800 Vulcan Classic

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