Brand new engine, the engine was only producing 2080 rpm and by the time I realized that was all it had, ( I brought throttle in VERY slowly) I was already airborne and wasn't positive I had enough runway remaining, so I began a shallow climb out and when I turned crosswind I lost apx 1000 rpm (I thought it quite on me), I had not touched anything prior to this point, as soon as it happened, I turned hard back to the airport and pulled the throttle back, considered landing opposite however I was a good 1200 feet in the air and I never would have made it to the runway I was way to fast and high with the runway directly below. At this point with the throttle pulled back to 1/4 throttle or so and the power felt as if it came back and it was running smoother so I continued downwind, turned a tight base, final, dumped some flaps, engine was at a lower rpm and again running smoother, cleared the fence at about 90 knots and floated forever, but it was a beautiful touchdown
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When I shutdown I got many questions of "what was this reading". I could not tell you until I downloaded the data, as I keep looking back on it, from the second I thought the engine quit I do not recall looking inside.
Our initial thought ( prior to downloading data, however we did have a gopro looking at one of the screens showing the ems that we could watch at the airport) was that I had stopped making power on the #1 cylinder, because the egt cht starting to climb faster than the other 3 cylinders and then when I had the loss of power it dropped completely off. Also the exhaust is very black, ie very rich, so our reasoning for the cylinder not firing is a plugged injector or blockage somewhere in the cylinder, that would make force more fuel to the other cylinders making then rich, #1 plug looks normal, #234 are VERY black. We pulled the injectors in #1 even swapped then with another cylinder to see if when we did a run in the problem followed to the new cylinder but there was no change. And the max rpm is still 2080.
Please no speculation on what I did wrong, I need to know what's going in with the engine and that's all, I have to give a huge thank you to RVG8TOR as he was flying chase and took care of the tower for me ( no emergency declared but they let us do whatever we needed to get back in the ground) so once again thanks mike.
If you think you might be able to give some insight please give me a call if you would. Two one four 7 3 3 two two six two
-david