I-320 H2AD mixture, idle, EGT
Back again with the never ending learning from all you fine folk. This time on an O-320 H2AD.
1. High EGTís: #3 and #4 run high EGTís. Anywhere below 5K with full rich mixture those two EGTs are in the mid 1400ís. #1 and #2 are normal to low. CHTís look fine on all 4 with no major variation. As opposed to my O-360 where if I lean, I can go pretty far back with an associated rise in RMP as it peaks even at sea level, on this one it almost seems like itís already at peak and I canít get a rise in EGT if I lean at low altitudes. This is the same for on the ground. No rise in RMP at all when leaning. Mixture arm goes full deflection both ways. If I cut off either the mag or EI in flight the EGTís will fly past 1500.
2. Reference above: inability to peak with leaning at low altitudes or on deck. (Ie. seems to be operating near a peak) Though it wonít get rough till about 1/3 of the mixture pulled out. Just no rise.
3. High IDLE. Will idle around 880 +/-20. Throttle goes full deflection and adjusted the idle speed screw to make sure the throttle had full throw and it did. Do I mess with the idle mixture screw? If so how? What else?
This is running on 1 mag and 1 EI. Runs smooth on both. Wooden prop.
Thanks for the help and insight!
Rhino driver by trade