Hey guys. My friend just had their carb rebuilt about a year ago. they were having oil problems then having fuel problems after it. They only ran it last winter a few times to plow their driveway and then tried to run it once this past summer and it ran like trash during summer. I ended up doing an oil change for them and changing their spark plug, due to them overfilling their oil and it being so dark. After that i went to fire it up and fuel just poured into the air filter box. thus making me believe the crank case had filled as well (which it did). unsure of why it had overfilled i tore into the float to check and make sure it wasn’t stuck and adjusted right. it was all clean and seemed stuck when i pulled the bowl off. I adjusted it to seat right and cleaned everything off. I put it all back together and put oil into the crank case and manually turned the engine over to get all the gas out. (had let it drain overnight) Then did an oil change. I fired it up and it seemed to idle good but fuel poured out. now heres where I’m stuck. Alright so i know the top two ports under the diaphragm are vent ports. well the one side has a black hose with a filter on the end and the other side is just open. that open side seems to just pee fuel out when i fire it up. No fuel goes into the air box anymore and the crank didnt seem to fill with fuel like it did the first time (but i noticed some must not have came fully out because it was a little thin so i plan to do another oil change) I’m just curious as to why the vent port at the top of the carburetor is pouring fuel out in a steady stream. i can turn off the valve and it’ll stop leaking then when i turn the valve back on it still doesn’t leak. only leaks when its running or coming close to firing up. I’m a car guy the set-up is different. Any help would be appreciated

Hey guys. My friend just had their carb rebuilt about a year ago. they were having oil problems then having fuel problems after it. They only ran it last winter a few times to plow their driveway and then tried to run it once this past summer and it ran like trash during summer. I ended up doing an oil change for them and changing their spark plug, due to them overfilling their oil and it being so dark. After that i went to fire it up and fuel just poured into the air filter box. thus making me believe the crank case had filled as well (which it did). unsure of why it had overfilled i tore into the float to check and make sure it wasn’t stuck and adjusted right. it was all clean and seemed stuck when i pulled the bowl off. I adjusted it to seat right and cleaned everything off. I put it all back together and put oil into the crank case and manually turned the engine over to get all the gas out. (had let it drain overnight) Then did an oil change. I fired it up and it seemed to idle good but fuel poured out. now heres where I’m stuck. Alright so i know the top two ports under the diaphragm are vent ports. well the one side has a black hose with a filter on the end and the other side is just open. that open side seems to just pee fuel out when i fire it up. No fuel goes into the air box anymore and the crank didnt seem to fill with fuel like it did the first time (but i noticed some must not have came fully out because it was a little thin so i plan to do another oil change) I’m just curious as to why the vent port at the top of the carburetor is pouring fuel out in a steady stream. i can turn off the valve and it’ll stop leaking then when i turn the valve back on it still doesn’t leak. only leaks when its running or coming close to firing up. I’m a car guy the set-up is different. Any help would be appreciated