My recent to me 2014 Dyna Switchback has the 103 twin cam engine. It has about 5k miles. I've ridden it less than 500.
It usually fires right up and settles down. But occasionally, especially if it's hot. The engine will not start right away and instead back fires. It spins normally. Just doesn't start on the first try. This is relatively rare.
Is this "normal"?
Once it starts, it runs fine.
Thanks

 

I have a 2013 and I had to replace my battery a couple years ago even though I keep it on a trickle charger most of the time. Its possible your battery is giving up the ghost if its still the original.

 

I have the same problem. I've always attributed it to vapor in the fuel lines. A possible contributing factor could be that the pressure leaks out of the fuel lines, either into the cylinders or back to the tank.

 

Vapor lock usually is a problem with carbs. The fuel lines on an injected bike are highly pressurized.
But it could be a hole in the gas line inside the tank. You can usually see or hear it if there is a low level of gas in the tank, but a pressure test is a better way to check it if there's nothing obvious.
When you start your bike do you wait for the fuel pump to initialize? If so, try pressing the starter switch right after you hit the run switch.
Get the battery load tested just as a basic precaution.

 

The battery is a new HD AGM type.

 

Yes.
I wait a few moments after turning on the switch before hitting the starter button.
It almost sounds like the timing is off when it does that.
Many times, itll fail to start twice in a row with backfires. But spins nicely.
If I toggle the switch off and back on it starts right up.

 

Any red light or codes showing up?

 

No codes.
But the alarm light is on ALL OF THE TIME.
The alarm is on silent.

 

My 11' was doing some occasional odd start like that years ago and I finally tracked it down to a sticking ACR. Replaced them both and never had it do it again.

Not saying it has to be that but it was that in my case.

 

Yes, but, if the pressure leaks out the lines close to the engine can get vapor bubbles in them. It causes hot start issues that only occur of you wait long enough for the bubbles to form and disappears if you wait longer for them to cool down again.