I have a 2001 banshee and it is backfiring out the exhaust silencers. I have cleane the carb about 7 times.. It seems to running lean on one side can someone please help

 

May want to do an leak down test on engine to see crank bearings are bad..Also may want to check to see if intake manifold is ok.PLz give more history on this atv...Was it running like this when you got it? did you just trade for it? has it been going down little by little? Thanks

 

you answered your own question- a lean carb will cause the motor to pop & backfire.
clean your jets.

 

How about a bad reed???

 

oh yeah- forgot that was a 2-stroke

 

I just purchased it from my father in law it had maybe 20 hours on the engine however it was leaking out fuel from the overflow tubes on one side so we took the carbs apart and cleaned them we reassembled them however it started running off one cylinder so we took them apart again started from bolt one and then came the backfiring/popping issue and one side started running lean we have set the air/fuel mixture to 1-1/2 turn out I can't figure out the tuning of the bike is where I believe my problem is. We switched plug wires to see of the backfiring side changed and it didnt so the problem is in my card I am running dmc pipes and silencers

 

I also have a 300 main jet and a 32.5 pilot jet

 

ok guys figured it out... i needed the grey hose that conncects one carb to the other!!! stupid but it fires right up perfectly!!

 

if your carbs aren't synchronized one cylinder could be working harder than the other causing a backfire through one of the pipes