Scrambler Scrambler Help

I am looking for a good starting point. While riding my 2006 Scrambler, I noticed it was down on power. It started and warmed up easy enough, but did not rev as high with the choke on full. While riding, It got a boost of power and then I realized that it was running on 1 cylinder. She ran great , for a little while and then died back down.

I rode home and let her cool off. I, then, replaced the spark plugs. One of which was fouled. This was not the problem.

It has only been a month since she ran like a top. She has fresh 93 octane gas and fresh oil. I felt the wires and they seem to be ok, no frays and good connections at the plugs and coils.

I am trying to figure out where to go with this problem, Fuel or Ignition? any suggestions will be welcome.

Thanks guys!

 

I took your advice and made a good inspection around the engine, especially the head. I found nothing out of sorts. I checked the electrics, Pulled plugs and checked for spark. Both had a great spark, so I reinstalled both plugs and the bike has been running great ever since. I hate this kind of problem, the kind you really don't know what you did to fix.

I am just a happy camper now and just have to check it up to a fouled plug!

Thanks for your time and advice.