Petrol is flowing out of the pipe at the bottom of the carburettor... its a honda 300 big red farm quad...

https://www.hondapartshouse.com/oemparts/p/honda/16100-957-073/carburetor-assy

Have you cleaned the Carburettor .

Go to a motor store and get some Carburettor cleaner spray can

and some Petrol System cleaner (a small bottle ).

Get some old rags like shirts or tshirts etc.

Take the Air filter pipe off the carb.

Spray a little carb cleaner onto the rag.

Wipe the inside of the carb with the old rag making sure not to open the small flap plates which may open slightly to one side.

Once the crap is removed from the outer section of the carb , using your fingers turn the carb opening & closing mechanism so the flaps are open so you can gain access , ( do not put too much pressure on them as you only need them open not broken off.) .

Get a big piece of rag and jam it to the back of the carburettor to stop any loose crap to fall inside.Making sure you can pull it out a little later.

Do the same as earlier and spray the inside of the Carburettor unit and put a little on the cloth. ( trying not to use too much or the old greased up stuff will go back into the Carburettor whichyou dont want. )

Clean as much gunk and degrease from the inside of the Carburettor as best as you can. To look as new as possible. I found using a small old paintprush helped by wrapping the rag around it and rubbing the gunk off the inside of the carburettor walls.



Try and remove any small bits of gunk which have fallen into the Carburettor.

Remember to pull out the rag you stuffed to the back of the carburettor earlier.Being very carefull not to damage the Carburettor flaps and trying not to get any small bits of grease fallen off down into the carburettor body itself.



.Leave the Air pipe off for now making sure it is clear whilst you start the engige. Once the engine has started give it a few good revs on the accelerator. to try and clear any loose bits .

Turn off the enginge , Take a very small amount of the Petrol system cleaner and spill a very small amount into the inside of the carburettor. Leave for a minute and Start the engine again and give it a few more revs on the accelerator.

Checking all items used and rags are removed from the engine area.

Replace the air pipe back and secure back onto the Carburettor unit.



This should help the car run a lot smoother as there is less buildup of grease and oil in the Carburettor system.





I have done the above on several of my Old and New cars after several years with great success.

All you are doing is cleaning all the gunk from spent fuel from the inside of the carburettor unit making the intake cleaner and better.

Remove it and soak it in "Sea Foam" carbureator cleaner. Should just be 2 screws holding it on. Get the service manual from Honda. Honda com Official Site of American Honda Motor Co Inc

check the solenoid on petrol line from fuel pump to carburettor is switching off petrol to carburettor when switching, you should hear the solenoid clicking when operating. Alternatively you can disonnect pipe fueline at carburettor, turn key ,if petrol comes out of line make sure it shuts off when you turn switch from petrol to LPG

Remove petrol nob and check the little filter in side to be clean,take petrol tank out to be clean drain your carburettors if steel no response you have to clean and over hull you carburettors needles .

You have a sticking float in the carburator, due to old gas, or dirt. The float moves a needle that turns on and off the flow of fuel into the carb bowl.

Honda uses a vacuum triggered valve in their petcock so fuel will only flow when engine is running. the 'bottom pipe'is most likely your vacuum connection.

usually their will be a tube leading off the carb to let excess flow drain from the carb to aviod flooding.

looks like your carburettor's giving out a rich fuel mix there or you've forgotten to turn off the choke get you carb tuned or jetted for better mileage (at a loss for speed - acceleration & power... if that's not important to you).,,