I have a 90 sportster and it lost throttle power while on a ride. All electrics were working checked for spark and there was none, i have changed the coil and checked battery connections and i still have no spark. Any ideas???

 

Start from the easiest and work your way back.

Plugs, plug wires, coils, wiring to the coils, timing plate, miscellaneous wiring in the ignition circuit. One of these will be your problem, but it's up to you to figure out which. Best of luck.

 

As said plugs and wires good place to start. I have seen new plugs that didnt fire. Good chance its your ign mod. in the cam cover or the black ign box under your side cover. You can replace both with after market all in one unit that fits in the cam cover.