jselvatici
Well Known Member
Hello folks from VAF.
Looking for some brainstorm in here.
Yesterday went for a flight after couple of weeks of not flying the plane. Did the pre-flight, engine run, and on the takeoff roll, RPM didn't raise as expected, so engine not making full power I would say.
I downloaded the data from JPI EDM-900 and plotted some items (huge thanks to Savvy platform), and noticed my FF on yesterday's takeoff was low (around 7) compared to a previous flight takeoff (almost 12).
It worth say that after the rejected takeoff, with power all the way to idle, the RPM dropped below of what I checked during runnap pre-flight.
Does this indicate it's time to service the Marvel Schebler carburetor?
I was going to check on spark plugs and so on, but after looking at the data, seems like spark plugs are out of the equation.
Engine is Lycoming O-320 (carbureted) with MS MA-4SPA (PN: 10-5217).
Thank you for reading this and appreciate some insights.
Looking for some brainstorm in here.
Yesterday went for a flight after couple of weeks of not flying the plane. Did the pre-flight, engine run, and on the takeoff roll, RPM didn't raise as expected, so engine not making full power I would say.
I downloaded the data from JPI EDM-900 and plotted some items (huge thanks to Savvy platform), and noticed my FF on yesterday's takeoff was low (around 7) compared to a previous flight takeoff (almost 12).
It worth say that after the rejected takeoff, with power all the way to idle, the RPM dropped below of what I checked during runnap pre-flight.
Does this indicate it's time to service the Marvel Schebler carburetor?
I was going to check on spark plugs and so on, but after looking at the data, seems like spark plugs are out of the equation.
Engine is Lycoming O-320 (carbureted) with MS MA-4SPA (PN: 10-5217).
Thank you for reading this and appreciate some insights.