Okay so I did a supervised overhaul with my A&P due to cam being worn on #4. Engine now has 8 hours but there are some persistent issues I am seeing, curious if I can use your brains. 1966 Mooney M20E, IO-360-A1A
1. Brand new PCU-5000 governor was installed during overhaul (old governor was contaminated and unrepairable). Before overhaul prop did not overspeed, after overhaul it is kinda lagging going into 2750-2780 and then coming back at 2700 limit. I also see RPM fluctuations in bumps, and while transition to a climb and descent. Propeller is a 3 blades hartzell installed new in 2000 and never overhauled (960 hours on prop). Some suggest to overhaul prop in case there is friction there but curious what other think
2. Oil cooler is cold to touch. Oil cooler was overhauled and flushed. Not like cold but more like ambient temperature. It should be hot on temps above 185 when vernatherm opens? Wondering if it is working. Brand new vernatherm was also installed during overhaul. Oil temps are in 230-235 in cruse but I don’t pay much attention to oil temp yet since I only 8 hours on overhauled cylinders
3. #1 induction leak. Small RPM - 150 degrees higher EGT than other cylinders, cruise RPM - same EGT as others. I replaced rubber seal and used gasket maker on the paper gasket. Re-did this twice, #1 still has the same induction leak. Where else it can leak from? New injector nozzles with nearly equal flow. fuel flow divider was overhauled as well (I thought maybe below 8gph fuel flow divider can fake induction leak by spraying less fuel than at higher fuel flows when it no longer controls fuel)