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View Full Version : Gas leaking from overflow tube when not running


zach0199
08-15-2010, 10:29 AM
04 400ex gas leaking from overflow tube when not running but wile running it doesnt what could cauze this it was just rejetted aswell?
Honda4LifeWes36
08-15-2010, 10:43 AM
Try shutting your gas off when you quad is off and see if it is still dripping.
zach0199
08-15-2010, 10:59 AM
Yea it stops when u do that what do i need to do to get it to stop?
tri5ron
08-15-2010, 11:06 AM
your float is stuck
clemsonteg
08-15-2010, 11:08 AM
Sounds like the float is stuck. Try taking a screw driver and tapping on the bowl. That should free it up. Worse case is that you take it apart and clean it up some.
zach0199
08-15-2010, 12:30 PM
Tried all that its still overflowing could it be somerhing else or will the carb need rebuilding?
wrekd
08-15-2010, 03:40 PM
Float level could be set wrong too.
ridein'red7
08-15-2010, 04:00 PM
needle n seat rubber tip coulda be eaten away and let gas in
Honda4LifeWes36
08-15-2010, 05:43 PM
Yup could be all that. I'd take it off and clean it. Check to see if the float is in correctly and the other small parts aren't eaten up and are still working correctly.

A little cleaning up will probably help everything. Carbs always wanna be clean.
CarGuy7a
08-15-2010, 07:25 PM
Originally posted by wrekd
Float level could be set wrong too.

As far as I know the float level on the stock 400EX carb cannot be adjusted. There is no metal bar connecting the two floats together that can be bent for adjustment. The float is all plastic and would break if you tried to bend it to adjust it.
hocman123
08-15-2010, 08:25 PM
i don't know if it happens a lot in atv floats but auto ones sometime get holes and fill with fuel maybe the float just has to get replaced
MtnEX
08-15-2010, 08:32 PM
This can be frustrating to figure out.

My Honda doesn't do it luckily because my fuel valve leaks I found out last time I removed the tank.

But my Polaris does do it. I've rebuilt the carb and it still does it... And I can't figure out if it's the needle leaking, the float level, or a bad float.

But to me, it seems to do it when I forget the valve and I'm away from it a while. Like maybe it gets hot sitting in it's spot and leaks then.

Make any sense?
MidnightBlade
08-15-2010, 09:34 PM
are you sure the screw is tight? and also get a new needle, had the same problem with mine. make sure there is no gas in your oil, mine had twice the amount of oil it was supposed to and half of it was gas.
and the new 400 has a non adj. float they are all plastic, but i think if it is an 03 or older it has the adj. float. not sure though