I have a new never flown Superior horizontal induction motor with Precision FI. The FI AD has been complied with. I'll contact the builder tomorrow, but I'm interested what some of the motorheads think might be my problem. Engine starts right up cold or hot. It idles a little rough, but the # 3 cylinder is about 300 degrees cooler than the rest most of the time and during a mag check the drop is about 120-130 on each mag and sounds like a machine gun. CHT on # 3 is the warmest, but only by about 25 degrees. I get some afterfire popping noises. The bottom plug seems a little wet, but not really fouled. I've swapped plugs from top to bottom with no positive results. We pulled the fuel nozzle on # 3 and cleaned it, but I haven't run it yet. I will do a flow check on the divider tomorrow. Is this a lean burning cylinder? It's disappointing since I just got the Airworthiness Certificate on the bird. Any help out there?
Thanks
Rocky
Thanks
Rocky