Leaky carb? Please help.

So my chinese engine was starting and working well for about a week, but recently it has been difficult to start. I have to prime the carb, loosen the gas cap, and put the choke at about half, and then it takes about 5 tries to start. The real concerning problem is that the carb leaks gas profusely after the engine initially runs for about 5 minutes and dies. The leak comes from the black plastic part of the carb (possibly from the bottom air holes?), and it seems to leak out about 6-8 oz of gas each time. Does anyone know what's going on here? I have read the thread regarding "rebuilding a carb," and I think I may have to seal the carb with the stuff called "RTV". Any help would be appreciated.

Best,
Cycofast

__________________
Cycofast

Maybe adjust the float..

I'm new to engines/carbs so I'm not sure what the float is. Thanks for the feedback!

__________________
Cycofast

Yes, sound's like the float level is to high. The float determine's the amount of fuel inside the bowl of the carb. To low and the motor will starve for fuel, to high the motor will bog down with fuel or fuel will exit threw the air cleaner or the hole's as your's is.

RTV: Silicon gasket maker

Give me a few minutes, I think Norm did a awesome post on adjusting the float; need to find it.

Here are some pic's of RTV. You can pick it up at any auto parts store

Attached Thumbnails

   

Carburetor pictures how to install and rebuild

Post #13 Bend the folcum arm down "VERY LITTLE" It may take several adjustment's and pulling the carb on and off till you get it right. And as Norm say's BE GENTLE!!

Thanks, I'll give it a shot and let you know how it goes.

__________________
Cycofast

i think maybe the vibration from the motor, together with the thin gauge float arm may cause the arm to bend down a little over time. i have adjusted mine 2 times in almost two months time. but it has always ran pretty well. i might add that each time,(after several adjustments) i improved the condition, but never got rid of the leak completly. also ride on some bumpy tar & chip country roads, which could also cause lots of problems.

a fuel filter is important its the first line defence of trash getting in the floats needle/seat. a lot of leaking carb problems is due to trash in the tank getting to the carb when no filter is used.

__________________
norms-iron-works.tripod.com

You said it!

__________________
If it ain't broke, and you mess with it long enough, it will be.

Regarding the fuel filter, I purchased one from a local toro engine dealer. It's basically a plastic housing with a screen inside, so I question if this was enough? Is there a better filter you recommend?

__________________
Cycofast