Why not elevate the revs until what you think the miss is occurring at. Then loosen one injector nut at a time to see if you can pin it down to one cylinder?

I was sitting here and wondering if it could just be air in the fuel type of thing. If that were the case you would not be able to identify one cylinder as the culprit. Anyways fairly smooth at idle and loosing the smoothness just a little higher and then becoming normal again does not strike me as a usual type cylinder issue.


Also if it will not present the miss problem under no load critically check the transmission fluid level.