Quad Problems (Backfiring Still)

[deerman2701]

Im starting this thread in my last hope of finding a fix for my quad, ive been working on it and researching, bought a carb rebuild kit, and even bought a whole other carb.

The quad still leaks gas from the overflow on the carb, it has done this on 3 carbs now.

What else can cause this? i checked the float levels and seat and needle. the gas stops when i push the float up.

Im now smelling gas in the air box, what can cause this other than the carb?

 

[deerman2701]

nothing ehh? guess im gonna try to sell it and get something else it was a good quad till this mysterious problem

 

[deerman2701]

someone told me it might be my reeds? could that be possible and how hard are they to replace?

 

[elwood]

only 2stroke have reeds I don't know why yours is still doing it, I would think it would be in the carb.

 

[deerman2701]

ya i would think so too.. the last 2 though leaked out the overflow, and got rebuilt and the last one i just put on was just off a running warrior... im so clueless.

 

[mopar1]

I guess you've made sure the bowl screw was turned all the way in and your gas was shut off right? Mine will drip like crazy if I don't shut off the gas.

 

[DirtBikeDad]

Don't remember if it was discussed in the other thread, but have you made sure the tank is free of debris/gunk? Have you tried an inline fuel filter?

Maybe a long shot, but with the same issue crossing 3 different carbs (at least one of which was a known worker), I'm thinking that the problem might just be crap flowing in from the tank and plugging up the jets and float needle in short order.

 

[deerman2701]

maybe i will have to get a in line filter.. like it seems fine when its just sitting when the quad is off.. no leaks, no drips from the overflow, but about 2 minutues into riding the overflow drips and the quad stalls and dies. then i have to wait about 5 minutues for it to crank over and run like nothing happened again for another 2 min and the process repeats...

When i changed the float needle and seat i tested the float with my hand with the bowl off to see if the gas stops when the float is up, and it does, doesnt leak one single drop.

 

[DeadLastRacing]

Might sound dumb, but your choke is ok on your carb right? You ride with it in at all times?

 

[deerman2701]

Got another UPDATE:

thought i had it fixed but nope.

I installed an inline fuel filter, cleaned the carb again, cleaned the tank, put fresh gas in it.

THe quad ran longer than usual, i was getting excited but it then proceeded to BACKFIRE and STALL

So frustrating....

It still drips a little bit of gas out the overflow but not nearly as much as it did last time. where should i go next?

 

[DeadLastRacing]

is it backfiring out of the exhaust or the airbox?

 

[deerman2701]

out of the exhaust..

 

[deerman2701]

someone told me a lot of black smoke came out too when it does