suzuki misfire?

I have a 2008 Suzuki 60 hp. After the motor has run a few minutes it has a misfire where it loses a bit of rpm's but picks it back up and there is a puff of white smoke out the motor. I have changed one of the 2 coils because the plugs it goes to had oil on them and still having the problem. I have also changed plugs and the gas is new 93 octane. Anybody had this happen or have any suggestions? Thanks!!

I have been been watching U-Tube videos several days with charging problems of my own.. There is lots on motors like Yours. One happened to look at the wires that came off of the Coil to the Plug and the wire had a break inside it. It would read sometimes and not at others .. The wire would Arc inside the wire and fire them misfire. Other than this the CDI unit that fires the coil Packs may be breaking down when the motor is warm --- Hope it is the wire :fish

Unfortunately it's not a wire. I have replaced 1 coil, didn't fix it, swapped the other coil, still didn't fix it, swapped wires of the spare coil, still didn't fix it. Had injectors flow tested and cleaned, still didn't fix it. Sounds like it is the CDI unit. Thanks!

Also, when the motor bogs down, there is some blue smoke and I've noticed the oil level has been down.