Polaris

I took it apart and cleaned it. But it still just runs gas out of the bottom of the carb

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One of the more common questions we get concerns either the overwhelming smell of gas coming from the carburetor or fuel leaking out of the bowl or overflow. Both conditions are typically caused by a stuck or worn float needle valve.
LEAKS FROM THE CARB FUEL OVERFLOW

Interestingly, if your fuel tank vent is blocked or not working, then this will cause air pressure to build up, forcing fuel into the carb. This excess fuel eventually gets pushed out of the overflow pipe.

The most common cause of flooding is dirt in the needle & seat. What happens often is you clean your carburetor, then start the engine. Dirt from a dirty gas tank, or in the fuel line rushes up and into the carburetor.
A rich fuel mixture (too much fuel for the amount of air in the cylinder) can cause an engine to load up at idle, foul the spark plugs, and also lack power or run sluggish.
If the lawn mower leaks gas the carburetor bowl gasket on the bottom of the carburetor might be dried out or missing. If the leak is coming from the bottom of the carburetor, try replacing the carburetor bowl gasket.
First remove the fuel line from the carburetor and plug it so fuel does not run out. On the very bottom of the carburetor bowl there will be a small brass cover screw, using a flat screw driver, open this screw and allow all gas to drain from the carburetor system. Next, close the screw and reinstall the fuel line.
The major symptom of a vacuum leak is very poor idle quality, stalling, Spitting back through the Intake, and a very lean condition at part throttle. This is the most common problem when doing carb conversions where either adapter plates are used or new intake manifolds are fitted.
Too much fuel in the air/fuel mixture can make your vehicle surge, sputter, or even stall. For example, if the carburetor is set way too rich, it will push enough gas through to the combustion chamber and flood the engine. Your engine power might lag if the engine is being flooded while you`re driving, as well.
One of the most telling symptoms of a bad carburetor is hesitation when accelerating. This is typically the result of a lean fuel mixture, which means too much air and not enough fuel.

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I have a husqvarna 323L string trimmer. I stored it after running the tank & carb dry for about two years. I fueled it, then started it, & it ran for a minute then died like I turned the switch off. Since it would not restart, I found the fuel filter had broken off the hardened fuel line & it sucked gummy crap out of the tank & into the carb. Failing at cleaning the carb, I finally put a new carb on it & replaced the pump, hoses & filter. It has ran good till this year. I winterized it with stabilizer & left it with a full tank over the winter. The gas in the tank was gone when I got ready to use it this year. I filled the tank with premix, checked for leaks, then started it. It would run fine for about half a tank, start idling poorly (lean) then cutoff & refuse to restart till I refilled the tank. I finally found the tank had cracks & was letting pressure out of the tank & apparently this was causing the carb to lose it’s ability to siphon gas out of the tank. So I replaced the tank which came with new hoses & a filter, which I properly installed to the carb. It cranked right up, but when it runs a half tank, the carb quits sucking gas out of the tank. When I pump to prime the carb, it moves the fuel into the carb, but the pump never gets hard like it does when I prime the carb when the motor is cold. I have to keep refilling the tank, prime, & then it starts & runs until the tank gets about half empty. The new fuel filter is down in the gas tank properly, but It will not run after it shuts off until I refill the tank & prime. I’m baffled. New tank, new hoses, new filter, new carb, & I can find no leaks in the fuel system. It runs strong. The 323L is a two-stroke & it always cranks on the second pull from cold on a full tank. Any ideas?
ANSWER :

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Flooding carb when i put fuel in the tank the engine floods without running the gas fills and overflows the air inlet till the tank is empty the tiller is not running and the gas keeps flooding the intake till the tank is empty ?
ANSWER : The fuel lines were hooked up backwards thanks

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Won’t start – gas is leaking out
ANSWER : If the gas is leaking out of the carb, then it is most likely flooding and the needle valve possibly is being held open by some stray debris. Carb needs to be removed and checked….possibly even rebuilt as older models require this periodically.

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Blower will run on choke but not in the run postion
ANSWER : If you haven’t tampered with any adjustments (Set screw, Idle, Hi or Lo jets etc…) then most likely your carb is flooding. You either have something stuck in the needle valve passage keeping it open. (And it can be Tiny! and I mean a speck.) You can try shooting some good old “Gumout” or any other carb cleaner/ degreaser made for carbs. Try removing the gas line off the carb “Inlet” and with that hose off spray the carb cleaner into that hole liberally. Pull the throttle open and close fast as you do the “spray in”.If you have compressed air? Send a little of that in there after the spray, then spray a bit more cleaner in. Let it then sit for 10 15 min loaded with cleaner. Then reconnect the gas hose, prime it up with the primer bulb, restart it, let it warm up a bit. see what happens. Oh FYI to much oil (or the wrong type)in the gas mix can sometimes cause something very similar to flooding. So make sure all is correct!

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My ryobi trimmer keep flooding.It has a Walbro carb #wt539 in it.
ANSWER : The most likely possibility is that the carb needs rebuilding. Just cleaning may not help. Gasgets go bad over time if fuel is left in the trimmer.

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My tractor stalls like it is starved for gas although the gas tank is full. I,ve changed the fuel filter and the gas cap. I’ve cleaned out the gas tank, gas lines, and the carburetor bowl. The problem seems more acute when the gas tank is full or near full. At this time to alleviate the problem, I blow through the gas cap and the fuel filter fills with gas and it runs good again. But as soon as the fuel filter has no more gas, of course, it stalls until I blow on the gas cap. As the tank gets down to about 1/3 full, the engine runs OK. What else could cause this condition?
ANSWER : I had a similar problem with a sears tractor. close to the carbarator is a rectangle box with a rubber hose going to the engine block – remove the hose and spray carb cleaner in the hose wait a few mins and try again – its a vacuum for the carb

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Weed eater starts but won't stay running – Weedeater 19 in 25cc Gas Hedge Trimmer
ANSWER : Probably “gum” and “varnish” build-up clogging the TINY passages [called ‘galleries”] inside the carb!

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Why will My weed eater only run with the choke fully on and cant give throttle?
ANSWER : It sounds like the carb needs adjusted. Things can even happen to new weed eaters.

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