Banshee backfiring

Mike_1987 · 05-13-2008, 07:06 PM

Hey, I have a 2007 banshee all stock except for a k&n airfilter. the quad ran fine until I put the filter on, than it started to backfire when you let off the throttle. I didn't rejet, i was told i dont have to by the salesman. I pulled the plugs and they are a nice brown color. Do you think I need to rejet a couple sizes bigger on the mains?

Garryese · 05-13-2008, 07:41 PM

Turn in the air screws on each carb a quarter turn at a time. If you get one full turn in on each screw you may have to go one size larger on the pilot jet. Should not have to change anything other jets.

ATVXTC · 10-01-2008, 10:46 PM

Yes, yes, yes, if you modify anything on a 2 stroke engine (banshee) that has to do with air, fuel, exhaust systems you MUST rejet. You must also jet for elevation and temperature. I would recommend doing a plug chop to check your mains. See links below for additional details.

What Is Jetting - A Great How-to Article. - Banshee HQ Forums
2-Stroke Plug Chop How-to

05-13-2008, 07:06 PM	#1 (permalink)
Mike_1987 Member Join Date: Oct 2007 Location: Morinville Posts: 13 Casino Cash: $76000 Thanks: 1 Thanked 11 Times in 5 Posts No Classified Ratings	Banshee backfiring Hey, I have a 2007 banshee all stock except for a k&n airfilter. the quad ran fine until I put the filter on, than it started to backfire when you let off the throttle. I didn't rejet, i was told i dont have to by the salesman. I pulled the plugs and they are a nice brown color. Do you think I need to rejet a couple sizes bigger on the mains?

05-13-2008, 07:41 PM	#2 (permalink)
Garryese Member Join Date: Jul 2007 Location: Edson, Alberta Posts: 522 Casino Cash: $533175 Thanks: 61 Thanked 207 Times in 142 Posts No Classified Ratings	Re: Banshee backfiring Turn in the air screws on each carb a quarter turn at a time. If you get one full turn in on each screw you may have to go one size larger on the pilot jet. Should not have to change anything other jets. __________________ Garry Past President Edson ATV Club Aging is inevitable... growing up is optional 07 Scrambler: Aaen Stage III, Trail Tech Vapor, Bear Claws, Clutch tuning. NOS to come 07 Scrambler: Bear claws, Trail Tech Endurance, Clutch tuning. 98 Sportsman: 20,000 miles when the speedo quit in '05 08 F350 SD CC LWB 6.4l

10-01-2008, 10:46 PM	#3 (permalink)
ATVXTC Member Join Date: Jul 2008 Location: Calgary Posts: 1 Casino Cash: $44600 Thanks: 0 Thanked 1 Time in 1 Post No Classified Ratings	Re: Banshee backfiring Yes, yes, yes, if you modify anything on a 2 stroke engine (banshee) that has to do with air, fuel, exhaust systems you MUST rejet. You must also jet for elevation and temperature. I would recommend doing a plug chop to check your mains. See links below for additional details. What Is Jetting - A Great How-to Article. - Banshee HQ Forums 2-Stroke Plug Chop How-to

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