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Date:  11-16-2016
Number of Hours:  0.00
Manual Reference:  
Brief Description:  If You Have a Hot Engine (part 2)

PART 2

4. I swore up and down that I had the mixture arm at the AeroInjector adjusted properly, and checked it many times. I got the proper RPM increase when pulling the mixture back. But I suspected I still was not getting the mixture to actual full rich. I readjusted the cable and the arm to give more throw (arm goes somewhat beyond the 45 deg called for in the manual). I saw measurable improvement in the evenness of the mixture and the engine operation during flight, and I START UP and TAKE OFF with the mixture pulled about 1/2" out. I have seemingly infinite mixture adjustments now, whether the OAT is cold or hot.

5. I've always had the big K&N (re-useable) air filter, and don't know how an AeroVee can breath with anything smaller. I had to build a blister into the bottom of my cowl to clear the filter.

6. Too much oil. I followed the AeroVee installation instructions for filling the oil and marking the dipstick. But when I'm running with my oil AT the "full" line I feel like the engine is bogging down slightly. RPMs can be 50 RPMs lower, and temps will sometimes run a bit warmer. So I routinely run with my oil level slightly below the "full" line.

A few other thoughts:
A. Is your needle installed with the flat side facing up, toward the engine?
B. Is the AeroInjector aligned perfectly parallel with the engine center line?
C. And of course your engine will certainly run hot while breaking in again.
D. Is the mixture arm set screw secure?
E. Are the throttle and mixture cables SECURED so that the cable housings do not move when the mixture or throttle are manipulated? I had a sudden loss of power at altitude one time because I had not secured the bracket I had made, after doing some engine servicing. Bracket seen in the center and lower photos:
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