no engine roughness after start.... but after takeoff, cylinder #1 CHT and EGT both do not rise with the others for the past couple of flights. it takes cylinder #1 about 5 minutes to "catch up" in temperature to the others. this is different than in the past, where all cylinders would heat up uniformly. I may have a sticky valve on cylinder #1. at 850 hours on the engine, I have never done a wobble test. I have only removed the valve covers once to "look" in there. I read Mike Bullock's "sticking exhaust valve" guide and maybe I can do it. I sent Darrell at Superior a question about proper reamer size for my O-320. Mike used a .4995 for his IO-360. anyway, at least I should learn how to do a wobble test. it seems like the proper thing to do while the Winter weather is rolling in early.
Last edited: