455 Bravo Uniform
Final Approach
Was going up for an evening flight.
I've never paid attention to MP on the ground. Is this typical/normal:
Cold startup idle 11"
Warm lean idle 14"
Hot idle after runup 16"
MP read 29 engine off which is normal.
I'm usually at 15" at 70 kts at pattern altitude, then drop to 12" to get my 500 fpm descent.
I almost said screw it, I'll just listen to the engine or use the tach, but then decided to abort the flight due to the unknowns.
When I built hot rods and drag cars, my engines always made better vacuum (low MP) at hot idle than when cold.
Normal or not?
I've never paid attention to MP on the ground. Is this typical/normal:
Cold startup idle 11"
Warm lean idle 14"
Hot idle after runup 16"
MP read 29 engine off which is normal.
I'm usually at 15" at 70 kts at pattern altitude, then drop to 12" to get my 500 fpm descent.
I almost said screw it, I'll just listen to the engine or use the tach, but then decided to abort the flight due to the unknowns.
When I built hot rods and drag cars, my engines always made better vacuum (low MP) at hot idle than when cold.
Normal or not?