Backfire for first time...

[Kylenav]

So I tried utilizing the search first of all... Of course every backfire it turned up is different than mine so here we go!

Noticed month or so ago a puff of black smoke from the right side on start up, not every time and only the first start of the day. So I ran a can of deadpan through thinking this magical can would fix anything. No effect.

Rode to work the other day and about 25 miles in I noticed a popping sound when at about 65-75 mph and just steady throttle. After the highway run is when I knew something was definitely the matter. Backfires under deceleration and acceleration with throttle under 1/2 or 3/4. Soon as I go WOP she clears up and pulls like a beaten bull as always. I've ran another can of deadpan hoping it was a clogged jet or something of the sort but hasn't changed. Best I can tell it's only one cylinder backfiring, furthest back (toward rear tire) on the right side (rear brake side).

I'm in no means an expert, especially when it comes to carbs. I do all my own maintenance such as oil, fluids, rear end maint...  Need to know what to check, and possibly how to check it!

Bike is an '01 tourer, cobra 6X6, k&n filter with pre filter installed. Always use 93 octave from Sunoco.

All help is GREATLY appreciated.

[Ricky-D]

You're part of the way there!

You already know it's the right side bank.

Now, you must find the particular cylinder that's the offender.

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[Michvalk]

I would start by looking at all the vacuum lines, and caps. Then check all the intakes for any sign of leakage at the head. Tighten the clamps on the tubes for the carbs to the airbox. I guess I'm saying, look for vacuum leaks

[Dorkman]

Could be as simple as a fouled plug.  Pull the plugs on the right side...you may find one all black and sooty.  Try the simple things first.