I had this same problem on my DRZ-110.
I took apart the carburator to clean everything out, but when i re-assembled it it started to leak gas out of the drain hose. Then i found out that the problem was that one of my gaskets were torn and were letting air in the drain which prevents it from being a vacuum, therefore causing gas to leak out.
I would first check the float & make sure it isnt stuck, then i would check all of the gaskets and make sure they arent torn, & replace the ones that are, even if theyre slightly damaged they can still let in air.
Your carb has to be 100% sealed & vacuumed to prevent any leaks & for it to work fine, so get those gaskets checked out
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Re: gas leak from carb drain hose
If your float, that's in the bowl of the carburator is sticking, it won't "float" as the fuel fills the bowl and never stop the fuel from entering, causing it to run out the overflow vent hose. The float is what regulates the amount of fuel that goes into the carburator bowl. You can try to tap it with a screw driver handle to see if it might stop while it's doing it.
Your carb works a bit like the rank behind a toilet. The fluid (gas or water) comes in, float goes up, which pushes a valve shut, fluid stops.
If this "just happened" you very possibly have a bit of dirt blocking the valve (easy fix). You could also have a stuck float or even a flooded float.
One word of advice: try not to disassemble the carb over gravel or dirt - there are small parts that can fall out. Also, unless you understand how carb mixtures work do not mess with the adjustment screws other than the idle adjust.
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Re: gas leak from carb drain hose
If i got you right, this will always happen if the pipe is lower than the carb its a syphon effect so it will always happen. You either have to place your question more specifically because as such there is nothing wrong with that.
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<span><span><span><span>f your water heater suddenly seems to supply less hot water and you've made sure it isn't leaking, flush the water heater tank to be sure mineral deposits are not reducing the heater's efficiency. To do this:</span><br /></span></span><span>1) Turn off the water heater's gas valve or electrical power.</span><br /><span>2) Let the water cool.</span><br /><br /><span>3) Turn off the water inlet valve and attach a hose to the drain valve to run the water into a large bucket, or to a drain or the outdoors.</span><br /><br /><span>4) Open the drain valve at the base of the tank, and open one hot water faucet somewhere in the house to let in air. When all water has drained from the water heater, turn the cold water valve on and off until the water from the drain runs clear.</span><br /><br /><span>5) Close the drain valve, turn the water back on to fill the tank, and turn the gas valve or electricity back on (relight the pilot if applicable).</span></span>
Ohhhh... so that's what happened. Do us a favor and careful with posting so many questions. They're all the same thing anyway right? Your carb will probably have 3 hoses yea? the smallest one that goes to the bottom of the bike is the drain hose. Only used when draining the carb. On most bikes I own I leave that one off. The other two are an atmospheric vent hose and the fuel line. They might look similar Try pouring some gas through both inlets on the carb with the fuel bowl off. The one that lets fuel come through the float needle valve is the fuel line.
Yes it sounds like the over flow, and this means the float in the carb is stuck, this can happen if old fuel sits in the carb for extended times occasionally a tap on the carb with the handle of a screw driver can dislodge the problem, but usually it need the carb cleaned, ethanol fuels can also damage the float valve which would then need replacement. is a fairly simple procedure to clean the carb, remove the carb,you can pull it sideways and leave the top and cable attached remove the bottom of the carb remove the float and brass jets blow out and clean replace all. work slowly , in a clean area, pay attention to how it comes apart, even take notes or photos, dont adjust the idle or air screws nothing needs to be forced
Just guessing because I can't see what hose your talking about but if gas is coming out the hose when you turn it on I suggest looking at the carburator and I suspect the hose came off the inlet to the carburator. Thats the only place gas goes after leaving the tank, if it is coming out the overflow for the carb then your float is stuck. Some bikes have an overflow hose for this reason and it does not connect to anything just hangs down to let gas drain from the carb.
This happens when the float in the bowl sticks open. On a carborator the bowl holds gas. When the fuel pump fills the bowl the float raises and is pushing a needle valve that shuts off the gas until the float goes down and the needle valve opens and adds more gas. sometimes is sticks or the needle valve doesnt seat properly. You should rebuild it, buy a carb rebuild kit for your type of carb. It comes with new needle valves, just remember how it came appart. Good luck Robert
That hose has dual functions; to drain the carb and to safelydivert gas if the float valve fails. Check to make sure the drain screw isn't open or loose. If not check the float and needle. The needle could be deformed as a result of ethenol exposure. Safe riding.
Your float in the bottom of the carb is likely stuck in the up position. The float attaches to a valve that shuts off fuel flow when level is just right. Can you see the little screw at the bottom of the bowl? Do you see the little overflow hose below that? Get a plastic soda bottle, put the outlet of the tiny hose into it. unscrew that little screw a few turns. Do you see fuel coming out? No? then take the back end of a screw driver and tap the bowl of your carb sharply 5 or 6 times. (Make sure the fuel pet **** under the tank is turned on. If you do not see fuel going into your bottle in a minute, shut off fuel at the tank. Screw the bowl drain back in. Remove the larger incoming fuel line that goes from tank to carb and put it into the bottle. Now you will open the petcock a little bit slowly. If you never see fuel come out of the tank, thru that hose, then your screens on the petcock may be clogged. Shut off fuel , Remove the cap on your fuel tank. blow into the line while slowly opening the petcock valve. Hear air bubbling in the tank yet? If you do, shut off valve, remove air pressure from line, point it back into the bottle and reopen the valve. If none of this works, then you need a new petcock valve.