DR650 making strange noise

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Acajou

Pack Dog
Joined
Mar 1, 2014
Messages
192
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0
Bike
Suzuki DR650
Hi guys. I think my bike has bad gas, and is making strange and inappropriate noises from it's exhaust pipe  ;D

But seriously, I have noticed the past two times I have gone for a short ride that when I come back and park the bike, it makes a strange backfiring sound after I turn the engine off. It's not the usual sharp "gunshot" backfire, more of a "mattress falling off the roof" sound, a "WHOMP" if you will. My bike does not generally backfire at all, except for some pops and crackles when shifting down aggressively.

The bike is jetted for JHB altitude and I am at about 800m at the moment. Could it be running lean, and more importantly, should I be worried?
 
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