I have a 914 with cylinder 3 that seems to be operating intermittently with a majority of the time it does not. The indication of something incorrect is that after start, EGT for cylinder 3 does not rise. The other cylinders rise to 900F to 1000F fairly quickly while #3 does not and sits in the 200F degree range. This is a relatively new engine with only about 2 hours on it. Plane recenlty got its final inspection and now doing some ground testing and avionics configuration.
Last weekend it was fine during all starts and avionics configuration procedures. Started is this weekend for prop adjustments and the issue is back again. No/low EGT for cylinder 3 and is rough running. Reviewed all the throttle adjustments/syncing and still the issue with #3 is present. We also removed the plug wires for cylinder 3 while running and no change in RPM. This leads me to believe that either it is not firing the plugs or no fuel to combust. But if cylinder 1 in front of 3 is firing one would think fuel is getting there as don't they share the same fuel intake?
Also hard to believe it's an ignition module as that would mean both modules have an issue. Somehow C3 plugs are getting grounded? Carb/fuel? Any ideas what else to check or point me in another direction?
