Quote: Originally Posted by kyle_keys
well both of the lines from the4 carb are the same size. and the crankcase one is bigger. and they all run up to the handlebars. and before i hooked them into the crank vent it wouldn't stay running. it has two vent hoses on the top where the marks are on this pic. and the gas is not spitting from the drain plug for the bowl its coming from the little hole on the bottom of the outlet lip. if i stick my fingers in there and hold up a little on the needle in there while its running it seems to smooth out some
Just vent lines that Definitely should NOT be all connected together. the vents are the Crankcase vent, the Bowl Vent and the Diaphragm Slide vent in your case, Some carbs have only one vent line to the bars. Yours has two. No big deal and Normal for your carb.
Gas running out of the hole at the bottom nipple of the float bowl means your float needle is leaking. Not staying running is most likely a plugged Slow "pilot" jet or plugged PMS pilot metering screw ports and passageways. When you use a finger to open the slide a little that is adding a little extra fuel from the third stage of the fuel delivery of the 3 circuits of that carb. First stage is the PMS and pilot jet, Third stage is the needle jet and slide, Forth stage is the main jet.
Your carb is dirty internally and needs a full disassembly and throughout cleaning inside. Make sure every port and passage way is clean. you may or may not need to replace the float needle too. Might just be a bit of crud caught in the seat prevent it from sealing when the float bowl is full. See Jetting 101 in the pinned section, it should help you out. Also... There are 100's of threads if not 1000's that deal with dirty carb cleaning, all are applicable and some offer good info. In a nut shell, pay close attention to how everything comes apart, Clean it well enough so you would not be afraid to eat your Wheaties out of it and re-assemble exactly the way it came apart.