So here is the backstory to this one. I don't ever winterize my bike since the winters here are so mild that I usually do ride some during winter. Actually with the proper gear you can ride year round here.
However, I moved into this house a year ago and started my new job just after. The new job requires quite a bit of travel and now I have actually not ridden my bike all winter.
I had wanted to go for a ride yesterday afternoon since the weather has been so nice. So I tried to start the bike. It immediatedly flooded. I didn't notice that I had floats stuck open until the gas started pouring out of the overflow tubes.
I shut off the petcock, and gave up for the night. It was well and truely flooded and I figured I would just let the excess fuel dissipate and try again in the morning.
Fast forward to today. One thing I have always found peculiar about that Dyna 2000 ignition is that it always seems to fire the coils just as soon as it gets power. If there is any fuel in a cylinder, it will fire it and the motor might bump over an 1/8 of a turn or so. If you get a coil firing when there is a valve open then you get a little backfire. I had totally forgotten about this, and wasn't ready for the epic backfire I got this morning.
I guess it's a good thing that I have a straight thru baffle in that 4 into 1 exhaust. If that thing could have developed any more back pressure it probably would have launched the baffle into the windshield of my Camaro parked just in front of the garage.
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I would say the backfire was about as loud as a 12ga shotgun. Just loud enough that it caused very short term ear ringing. Not as loud as my old .357 magnum with a 4" barrel.
I guess it's time to pull off the smoothies and give 'em a proper cleaning. One thing I know for sure, my ignition works fine. Wound up riding my mountain bike instead.