well bottom line....I'm convinced your float needle is not sealing. If gas is continually running/leaking, then it has to be coming in past the needle valve. Question: how level is your engine?
I have seen this problem on a few models where the engine was tilted too far forward and the float couldn't come up enough to seal. What brand was the replacement carb?
The carb isn't completely level, but it isn't tipped much at all either. Everything on the kart is stock, so I haven't changed the angle from what it was to start with. I'll have to check on the brand of the carb, but it looks identical to the original (which wasn't very old, BTW). The old carb has a cast-in name
"DE - then some kind of a star symbol - NI Standard of Japan"
There's a cast in number on the opposite side "PD24J", and a stamped in number "HA00S113". I'll look at the new carb and report back what it is.
I agree that if it's overflowing it makes sense that the needle and seat are not sealing, but I've taken both carbs apart multiple times, and adjusted the float to the point where it was starving the engine, and it still overflowed when the engine wasn't running. I know this sounds like one of those problems where the person asking the question (me!) isn't telling the whole story (I've been there, believe me), but this is exactly what's happening with this thing. I'll take a another look at the tilt of the carb and the float level. Does anyone have a suggestion on a float level that may work? If that is the problem, I seem to always be on one side of the sweet spot or the other.
i think the float level for that carb is 18.5mm if that carb has the long pilot jet.
also this is just a thought is your gas cap vent working ok,maybe its not venting wright letting tank build up pressure and gas forcing the float open.i know i can fill my tank full and if it sets in the hot sun a little while gas will start to come out my vent.sounds crazy but just a thought.
hope you get your problem solved that sounds frustrating
pud _________________ 2006 sunl 150b
Dr. pulley 10 gram sliders, 1500 torque spring,39 tooth sprocket,2000lb winch, red neck uni filter, 125 main jet at 1,450 elevation, drilled out exhaust,ngk iridium plug,performance intake
trying a set of 10gram rollers now
Another good idea,I've seen my gas gurgleling out my clear vent hose when it gets hot.
Gas coming out on a hot summer day... Sounds like skunk beer to me. Oh... you were talking about the buggy not the buggy driver... Gotcha...
Seriously, with the carb off the buggy, what I've done is hook up the gas lines and see if fuel still flows through the same port.... If it does it has nothing to do with the rest of the buggy.
We had a very similar problem when we were jumping our buggies out at EMR. My son's buggy had gas pouring, and I mean pouring, out all over his hot engine.
We installed a shut-off valve the next day and still had to fix the carb.
We took it all apart and put it back together several times. We found that the float would stick if the carb was placed in a certain position during the installation. We took it back apart and made sure that the float moved freely in just about any position. It took a while, but we eventually got it. _________________ Chris Dierkens
'04 Yerf-Dog 3206 10g Rollers, 1500# Spring, Reverse, SuperTrapp, Uni
'04 KPX Xterro: pumper carb, oil cooling, 10g rollers, Junkies pipe, Uni
'05 Blade 150 DX: 4 Valve head, 10g rollers, East Side pipe, Uni
www.northeastbuggy.com
If I hadn't met you Teamhog I wouldve taken that the wrong way.lol
If you still its a float problem take the the carb off and conect the the top half of the carb to the fuel line ,let the floats dangle turn gas on, gas should come out, be careful about losing the needle lift the float up the gas should stop.
Okay, I finally had a little time to check some things out. The choke is working fine. I lowered the float level a couple times, ending up with it so low I don't think it would run right, and it still overflowed. I even bench tested it and it worked okay, but then put it on the kart and it overflowed again!
I didn't read the last two replies until just now, but Teamhog might be on to something. One thing I haven't checked is to make sure the float can move through it's travel in any position without interference. I'll check that tonight hopefully. In the meantime, any other ideas?
Thanks to everyone that has helped me with this.
ps - Are there any other carbs that would work in this application that might be better than this one? I used to race sprint karts, and I used Tillitson carbs, which always worked great. Anything like that for these, or should I keep trying to make this one work?
ps - Are there any other carbs that would work in this application that might be better than this one? I used to race sprint karts, and I used Tillitson carbs, which always worked great. Anything like that for these, or should I keep trying to make this one work?
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