'85 250sx carb spewing fuel...

[Caminofeld]

Hello, the other day my SX started spewing fuel out of the top and bottom drain tube and became VERY hard to start.

Does the carb need a rebuild? If so, how hard is it to do and is there anything I should know?

Thanks.

[Flyingw]

Here is everything you need to know.

http://www.3wheelerworld.com/showthr...54#post1257154

[DohcBikes]

More than likely the float needle is stuck open.

This is commonly cured by tapping the bowl with the end of a plastic screwdriver, or simply riding it hard to dislodge the float needle, but its always a good idea to check it all out as flyingw suggests. There could be junk in the carb holding the needle away from the seat as well.

Usually a major fuel leak doesnt indicate the need for new carb parts, things like that tend to slowly get worse over time as opposed to a sudden leak.

[Caminofeld]

Thanks guys! I suppose the first thing I'll try is a thorough cleaning. Now that I think about it, before this happened I pulled the filter/stopcock from the tank to clean it and a bunch of crud fell out. Maybe some of that junk got into the carb and caused the float to stick. I tried the tapping and hard riding to no avail when it all started.

[Caminofeld]

And FlyingW, great post on those carbs!

[Flyingw]

You're welcome. I've had all good feedback on my tutorial. It really doesn't take much to keep the float valve from seating. In fact a human hair across the seat will keep it from seating. Give it a good cleaning and a fresh rebuild kit.

[dougspcs]

So what you're saying Jim is we best wear a hairnet while doing a carb rebuild??

I didn't see that in your tutorial!

[Flyingw]

I'd suggest a full body condom!!!!!!

[Keepah Rolln]

Any luck with carb cleaning?