Question about Honda CRF 230 F Motorcycles

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Gas pouring out of carb into air box

Bike ran fine. Loaded it on trl when tried to re-start flooded, barely ran.
gas was pouring out of air box. Got filter dryed out. All gas cleaned out of box. As soon as I turn gas on it pours into air box. When turn off gas
it will crank and run until uses existing gas in carb. Seems like float is stuck?

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Sounds like it take bottom of carb off and see if needle is stuck

Posted on Jul 29, 2009

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2000 hd fb keeps back firing and wont stay on unless choke is kept atleast a quater the way open

Posted on Apr 05, 2010

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1 Answer

Virago 250 ran good until last parking. then, about two weeks later, what looked like a gas/oil blend began pouring out of the breather when cranking. engine would not start. removed carb and replaced...

Check you oil level first and foremost, sounds like your bike IS flooding. When you replaced your float needles did you inspect the seats they sit in?? if they have a nick in them they wont seal and flood. remove the carbs and bench test them. you may need to lap the seats if they are nicked if you need to please contact me and i will give you step by step on that part.
Good luck

Apr 19, 2011 | Yamaha YZ 250 Motorcycles

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I have a 1982 yamaha 650 seca turbo. I just bought it and was gone for two week on vacation. pon returning, my motocycle leaked gas from the exhaust pipes. So I cleaned my carb. Boiled it in lemon...

When the carburetors over flow enough to fill the exhaust, It is possible that the gas also went into the cylinder and flowed past the rings and into the crankcase. With the engine overly full of gas and oil you could easily pop a seal or blow out a gasket. Check your oil level. If it is too full , change the oil, it will not lubricate properly with all the gas in it. Check that your shaft seal has not popped out. Check the air filter, the breather may have blown oil and gas all over it when you started the bike. Empty your pollution tubes behind the motor( they will drain the air box). Get in the habit of turning your fuel petcock off when not riding. This gas flooding happens randomly in certain models but can happen to any one.

Sep 07, 2010 | 1981 Yamaha XJ 650

2 Answers

Twice now the engine has flooded. When I took off

clean that carb-pull float cover down and inspect--is the fawcett on prime then it will pour--chec oil for smell of gas or feels thin--engines need exercize like us to keep healthy

Jun 25, 2010 | 2005 Honda VT 750 Shadow Aero

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I've got a 2005 650 that is pouring gas out of a tube under the carb. It only pours when its started and running. Won't idle

Your carb has a hung float or needle and seat issues.

You have to take the carb off the bike and consider replacing the float and/or needle and seat.

You might get by just raising the float level. But this is only a stopgap maneuver. Buy a new float!

You bike is flooding so it wont run right until this is fixed.

The reason its only flooding while its running is because your bike has an automatic gas tank valve that opens when the bike starts and makes vacuum that opens the valve. It is saving you from the bike totally filling up with fuel!

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Just bought my first bike: 1995 Suzuki 600 Katana. Heres the problem: its been sitting for 7 years. Emptied gas tank, cleaned carb but is flooding. Put new battery in it and air filter is dirty but not...

When you cleaned the carb, did you get the needle valve put back in correctly? That is the small pointed valve that is actuated by the float. As gas flows into the carb it raises the float and the needle valve rises to shut off the gas flow. You should have put compressed air through the hole that the needle valve goes in. There is a removable jet that the needle valve tip goes into to shut off the gas. Remove a spark plug after trying to start it. If the plug is very wet it means the carb is flooding, and if it is dry it means the motor is getting no gas. If the plug is dry you can take off the air cleaner boot and pour a tablespoon of gas into the carb opening, then quickly try to start it. If it starts momentarily you know you just need to work on the carb. You also could remove a plug, put a teaspoon of gas into the cylinder, replace the plug and try to start it, to see if you get a pop or two. Put some Seafoam in the gas to help clean the carb. Make sure you use compressed air to clean out all the small passages in the carb. An owners manual would tell you exactly how to adjust the float level, but I think you can assume it's okay if you didn't do anything to it. Generally the gas shuts off when the float rises until it's about level. When you take off the bowl of the carb, before removing the carb from the bike, there should be gas in the bowl, but it shouldn't be overflowing.......somewhere around half full. Also, are you getting good compression? If that bike has a kick-starter it would be easy to determine if the compression is okay. If there is not much resistance to the kick-starter, or pushing the bike in high gear, the compression is bad and valves may be stuck or burned. Let me know how your project is going.

Jan 01, 2010 | 2005 Suzuki GSX 600 F (Katana)

1 Answer

My wr 360 ran out of fuel couldent get it on reserve in time now it wont start keeps flooding it self any ideas most thanks dom

I'm going to assume 'flooding' means gas is pouring out of the carburetor.
Chances are when you ran low on fuel some dirt got pulled into the carb & is holding the needle valve open.
You can try tapping the carb bottom with a mallet - sometime this will free-up a sticking needle valve.
IMO what is needed is to remove the carb and clean/blow everything out and reassemble. BE CAREFUL not to bend anything - esp the float.
When putting pack together check the petcock, gas tank and any air/fuel filters for contamination and act accordingly.

Dec 14, 2009 | 2002 Husqvarna WR 360

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Air box and crank case fuel flooding problem happened before, thinking it was stuck or worn float needles; I installed 2 Carb float needles left side facing rear of carbs , all larger main jets, all...

Well there only one way the fuel can get into the crankcase and that's from the fuel tank. The petcock must be draining and the float needles are not stopping the fuel flow. Do you have a prime position on the petcock? If so do not run the bike in the position. Try topping the tank off with gas and letting it sit for a while and see is the gas has gone down and then check the crankcase and see if there's fuel in it again. i still say its got to be your petcock.

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During a ride in the Nevada desert, my friend and I both experienced a situation where after parking our bikes, we tried to start them and they were flooded. In fact, they had gas squirting out of the air...

Sounds like you got something in the carbs that got into the float needle and keep it from shutting all the way to stop the fuel from filling the float bowls. And when this happens it has know where to go but up threw the main jet and into the intake and into the combustion chamber which would flood it. And also it would leak back from the carbs and into the air box.
The air cleaner needs to be clean so you wont get dirt into the carbs and also put a inline fuel filter on if the is not one already.

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1 Answer

Will start but then stalls and then gas pours out the air filter

float needle probly has some foreing piece of something stuck in it ,, allowing too much fuel in the carb,which floods out the engine

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Keeps flooding

The carbs need a full cleaning....use piano wire of the right size for the jet holes.....Carb cleaner and compressed air to blow out the fragments.

Apr 06, 2009 | 1987 Suzuki LS 650 Savage

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