1999 Vulcan 800 - Sat for LONG time - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 16 (permalink) Old 10-03-2018, 01:10 PM Thread Starter
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1999 Vulcan 800 - Sat for LONG time

I last rode my vulcan 800 for any length of time in February of 2017.

Since then, it has sat unridden or started since about 2 or 3 months ago. I replaced the battery and the bike will start but it will only stay started with the choke all the way out.

I am assuming I need to drain all the fuel and put in some seafoam or berryman b12.

I have had a hard time locating exact videos \ tutorials on what exactly I need to do to drain all the fuel... Wouldnt I need to get the fuel out of the carbs too ?

Is it possible to drain the fuels out of the carbs without taking them off? From what ive read, the best solution is to disconnect the fuel line from the 3pm position on the petcock.. hook a rubber line down into a gas can.. then turn the petcock to prime and it should allow the fuel to freely flow... then remove tank, drain all gas, then wipe out the entire thing for any sentiment.

I dont work on my bike much but im also at a position where I cant really TAKE it anywhere.

Thanks for the help!
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post #2 of 16 (permalink) Old 10-03-2018, 02:20 PM
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there's a allen bolt on bottom of carb to drain the bowl gas, the PRI on the petcock allows the gas in tank to flow freely

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post #3 of 16 (permalink) Old 10-03-2018, 11:45 PM
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Fill the tank with gas and take it for a highway ride. Fill it again and ride some more, it will clear the carbs.
If you want you can add an additive but doubt you will need that if you just go riding, should clear up.
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post #4 of 16 (permalink) Old 10-04-2018, 10:45 AM
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Carb could be gummed up, so try to drain it, use a carb cleaner, and try running it.

It sounds like my wife's old Shadow 600. She let it sit too long, and even with fuel stabilizer, the carb got so gummed up it would only run with choke on and full throttle. I rode it for a good long while like that and still couldn't get it to un-stick, so off to the mechanic it went (I don't have a garage or time to work on the bikes).

Good luck!

-John

2016 Vaquero (mostly stock)
2005 VN800B Bobber (Blue Collar Bobbers kits)
1979 KZ650SR
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post #5 of 16 (permalink) Old 10-04-2018, 02:59 PM Thread Starter
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So last night I drained all the gas out of it through the petcock.. set it to prime and drained everything. Removed the tank and took it home.. wiped all the gas out and got a vaccum in it to try and get any particles\debris that was in the tank out. I charged the battery so everything was good there.

I mixed 2 gallons of new 87 octane fuel with 4oz of seafoam in large jugs.. shook up the jugs so the seafoam was mixed into the gas and then added it to the tank. I ran the bike for 2 or 3 minutes with choke out not touching anything.

It will start on choke completely out.. petcock to ON of course. With choke all the way out.. if I crank the throttle just a LITTLE bit it starts to sputter.. if i give it a twist it almost dies. It dies completely when the choke is pushed in.

I opted not to drain the carb as it had been a few months since I had started it so I was lead to believe that after that amount of time there really wouldn't be any gas left in the carb.

I read that sometimes you have to let the seafoam sit for a few days for it to work its magic so that is what im doing. I will revisit the bike and try again on monday!

I have a video on removing the carb but I hate working on carbs, I always seem to have problems. So im trying not to pull it. If so, I guess i'll do it the right way and submerge in yamalube carb dip.
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post #6 of 16 (permalink) Old 10-04-2018, 03:07 PM
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Yeah, it sounds to me like the carb is gummed up. You can get a bucket of carb cleaner and dunk the whole thing if you don't want to take it apart. AFAIK that won't hurt the carb.

-John

2016 Vaquero (mostly stock)
2005 VN800B Bobber (Blue Collar Bobbers kits)
1979 KZ650SR
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post #7 of 16 (permalink) Old 10-04-2018, 03:11 PM Thread Starter
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I saw the berryman's carb dip.. im fine with that, but will that penetrate all the small orrifices \ jet holes as good as taking the carb apart and dipping the body, jets, components, etc individually ?

After I do the dip, would I not have to then re-adjust the idle screw or is that only if you replace the needle(s) ?

I guess if I take it apart I should get the rebuild kit since now its almost a 20 year old bike... $30 to get all new parts probably isnt a bad idea.

Last edited by goodry; 10-04-2018 at 03:58 PM.
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post #8 of 16 (permalink) Old 10-05-2018, 09:26 AM
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Originally Posted by goodry View Post
I saw the berryman's carb dip.. im fine with that, but will that penetrate all the small orrifices \ jet holes as good as taking the carb apart and dipping the body, jets, components, etc individually ?

After I do the dip, would I not have to then re-adjust the idle screw or is that only if you replace the needle(s) ?

I guess if I take it apart I should get the rebuild kit since now its almost a 20 year old bike... $30 to get all new parts probably isnt a bad idea.
I would do the rebuild, especially if you already have the carb off... I've never done it, but it doesn't look too complicated if you have any mechanical skills (I do not have the confidence to do it, nor the space or time).

If you're not going to do the rebuild, I'd put on gloves and agitate (read: swish around) the carb in the cleaner, to try and get the nooks.

Related: On my VN800, it wasn't ridden much one year, and the next year it ran OK, but I took it in for an oil change, and my mechanic said I must've been riding it a lot more because I had blown out whatever crap had built up in the carb. He adjusted the idle down, and it's been great ever since (I religiously put fuel stabilizer in the gas tank before letting it sit any more than a few weeks).

My point is that if there's just a little bit of crap in the carb, but it's not all gummed up (as might be the case if you dunked the carb but didn't take it apart), it may run well enough to blow out said crap. It'll take a good length ride (1+ hour) at varying speeds, but it does work. My wife's Shadow wouldn't get unstuck no matter what I did. I rode it around the neighborhood at full throttle for over an hour with no luck. Ended up trailering it to my mechanic for a carb service.

Oh, and if you want to clean out the jets, try a piece of wire out of a wire tie from a loaf of bread. A friend of mine runs a business repairing small engines, and I took my mower to him. He dropped the float bowl, wiped it out, and ran a wire from a wire tie up the jet. Cleaned it out and the mower ran again just fine.

-John

2016 Vaquero (mostly stock)
2005 VN800B Bobber (Blue Collar Bobbers kits)
1979 KZ650SR
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post #9 of 16 (permalink) Old 10-05-2018, 10:17 AM
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If you have already removed the carb, just give it a proper cleaning. A can of carb cleaner and a few screwdrivers are pretty much all you need.

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post #10 of 16 (permalink) Old 10-06-2018, 04:19 PM
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Check the air box under the gas tank it's probably full of leaves and shit from animals living in there that could be the problem of running it's air is being restricted
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