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 slight backfiring thru the exhaust

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4 posters
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OLD HICKORY
Scooter Rider
Scooter Rider


Number of posts : 38
Location : TENNESSEE
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Registration date : 2013-04-05

slight backfiring thru the exhaust Empty
PostSubject: slight backfiring thru the exhaust   slight backfiring thru the exhaust I_icon_minitimeWed May 15, 2013 8:25 pm

Just wondering if anyone out there has experienced slight popping thru the exhaust when letting off the throttle. When at highway speed, sometimes, not always, when I let off the throttle I will hear this happening. I was wondering if there is something I can check or adjust to eliminate it short of buying a $300.00 device to custom adjust my fuel injection system. The Wing drives out nice with no hesitation. I checked the air cleaner a week ago and it is fine. The bike only has a little over 4,000 miles on it. It is a 2007 model. Thanks in Advance for any input you may have. Old Hickory
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tinman
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slight backfiring thru the exhaust Empty
PostSubject: Re: slight backfiring thru the exhaust   slight backfiring thru the exhaust I_icon_minitimeWed May 15, 2013 9:17 pm

Sounds like it back pressure burning some unburnt gas .2 cylinder motorcycle engine's are known to do a popping sound when the drive train decompress the motor with throttle close. Don't touch the fuel system they are factory set .If your mpg is good leave it alone.
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OLD HICKORY
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Number of posts : 38
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PostSubject: Re: slight backfiring thru the exhaust   slight backfiring thru the exhaust I_icon_minitimeWed May 15, 2013 11:27 pm

Sounds good to me, thanks for your advice. I expect a little popping and farting from my Harley but I didn't think it was possible with the Wing. Old Hickory
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Old Limey
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Old Limey

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PostSubject: Re: slight backfiring thru the exhaust   slight backfiring thru the exhaust I_icon_minitimeThu May 16, 2013 4:08 pm

I would also check the fuel rating you are putting in, i seem to recall someone having the same thing happen with the mixtures of fuel you can buy in the USA, Methanol, or some such thing. Smile
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OLD HICKORY
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PostSubject: Re: slight backfiring thru the exhaust   slight backfiring thru the exhaust I_icon_minitimeFri May 17, 2013 9:26 am

I use non-ethylene gas in my Wing. You would think that would be the best for it. OH
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RamblinRedhead
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Registration date : 2013-03-14

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PostSubject: Re: slight backfiring thru the exhaust   slight backfiring thru the exhaust I_icon_minitimeFri May 17, 2013 11:46 am

My SWing does this, too. I always assumed it was the "Flex Fuel". It's an occasional thing for mine, and it runs fine otherwise.

It's not eay to find non-ethylene gas in our area. I was considering buying some of the cans of it at Sears (they sell it for lawn mowers, yard tools, etc).

Now, maybe I'll skip it.
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