1999 Honda 300 fourtrax fwd fuel problems

[Makj44]

As it should be easy to see I am not a four wheeler mechanic so I apologize for asking for help, I replaced my OEM carburetor with a aftermarket carburetor and with y’all’s help adjusted the air/ fuel and it ran great until this evening and I noticed a smell of fuel I inspected carburetor area and found a steady flow at the vent line on the bottom of the carburetor so my question is is the float the only thing that will cause this problem? Before I installed the carburetor I checked the jets for tightness and they all seemed fine?

[fairfaxcycles]

Aside from the float needle being the sole problem, some trash from the fuel line and fuel tank could have gotten hung up between the needle and the seat causing the needle to keep leaking fuel

[davefrombc]

The float could be stuck partly open or  misadjusted. about the only thing I can think of otherwise is if there is a drain valve on the floatbowl bottom it could be stuck open  by a bit of debris if you   pushed the button  to  let a little  fuel/  water out.

[Gwbarm]

Sounds like float needle is not closing completely, i wouldnt expect that from a new carb, unless trash or residue from an old fuel line got in there.

[Mech]

It sounds like the float needle has got some dirt or fluff under it. The float needle's seat has an O ring to seal it to the carb body and those can leak too but it shouldn't be the case with a new carb that was ok to start with. Check the drain screw is done up first though if it has one, or check the drain valve if it has one as Dave is suggesting. I'm in New Zealand and I've never seen a drain button. I'd also turn the tap off and run the bowl empty, then turn the tap on and start tapping the carb body fairly hard around where the float needle is with a screwdriver handle.. It may just flush the dirt or wriggle the needle into a better position and it might come right. It works sometimes !

Sounds though like you might need to clean the fuel tank or tap filters or fit an after-market fuel filter.

[fairfaxcycles]

Did you ever figure out the problem?