Question about 2005 kawasaki VN 800 Vulcan Classic

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I have a kawasaki 800 vulcan every time i start it it runs for 30 seconds and then starts pouring out gas through the air cleaner do you have any ideas as to whats wrong ?

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Could be a sticky needle and seat, or float level. First try tapping on the carby bottoms with a screwdriver handle, sometimes this can dislodge a partical of dirt causing the problem. If not, then the carby will have to be removed and taken apart. This is a common problem if your bike has been in storage over winter.

Posted on Apr 27, 2010

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Posted on Jan 02, 2017

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2005 Kawasaki VN 800 Vulcan Classic how to properly clean and seal a rusty fuel tank


Hi, Scott to properly fix fuel contamination issues you must start at the source the "GAS TANK" you will need to buy a gas tank rust remover and metal prep solution system, go online and research the different products available, stay away from rust converters and liquid Kreem liners, I recommend POR15 because it stops rust permanently you will also need some nuts and bolts ball bearings etc. and a service manual.
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4. Pour in 1/2 cup of nuts, bolts, ball bearings, etc. and seal the opening, shake vigorously for 2 minutes.
5. Open the gas cap and shake out all nuts and bolts along with dirt and rust, use a flashlight to inspect results and repeat as necessary until all rust is removed.
6. Following the directions of your rust remover product begin the procedure of removing residual rust, remember bare metal when dry will start to rust/oxidize immediately so make your last step a final rinse of solvent or kerosene anything that has a petroleum base, your first tank of fuel will mix with the residual solvent and not damage your fuel system.
7. Properly clean or replace all fuel filters, petcock, and fuel lines.
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Hi, David and the usual suspects are:
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Hi, Carlos and the usual suspects are:
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Hi, Bernard and the usual suspects are:
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Hi, Pete before you start it in the morning, pull the spark plugs and sniff them. Do they smell like gasoline? Are they wet? If so, you may have fuel leaking past the needle and seat in the carburetor and flooding the cylinders.
Use a voltmeter on the battery an hour after you shut the bike off. It should be at least 12.6 volts. Check it again in the morning. It should still be 12.6 volts or more. If not, something could be drawing current when the key is off.
If it's a carbureted bike and the ambient temperature is warm, you may be over-using your choke/enrichner. Try cranking it with the choke turned off first and then try half-choke, and then full choke. If you start with too much choke it will flood. After it starts, shut the choke off after 15 - 30 seconds and then use the throttle to keep the bike running until it warms up. Over-using the choke will soot up your spark plugs.
A fresh set of properly gapped spark plugs can make a lot of difference in how easily a bike starts.
Engines need a richer fuel mixture when they're cold. An intake leak can also cause hard starting because it leans out the air/fuel mixture.
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I have a 95 Kawasaki Vulcan 800. Here lately I just can't get it to act right. I keep having a problem with lots of raw gas pouring out of the exhaust pipes. I have had the carb professionally cleaned...


Sounds like the carb has not been cleaned properly, gas overflow like that could be caused from a worn seat/needle. Did you put after market exhaust on it?

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1 Answer

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This sounds like a carb float being stuck open. Turn off the gas and drain the offending carb. Next, turn the gas back on and sharply tap the float bowl with the plastic handle of a screwdriver as the fuel bowl refills. The goal here is to vibrate the float to free it up. If doing this process a couple of times does not free the float I would remove the carb and clean it with a spray carb cleaner. Pay special attention to the float needle. Clean the air filter then re-mount carb. Next Remove the water trap bowl at the bottom of the petcock, (gas valve). Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ). Now would be a good time to install an in-line fuel filter if you don't already have one.

Install new stock spark plugs AFTER you make sure that the bad cylinder is getting spark. Be sure to balance and sync the carbs when finished.

Please rate this solution as " FixYa " if all goes well. Thanks

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