Hi Guys,
I had chance to do some more flying again this weekend to continue the break in process.
PA28 180B fresh overhaul and new monitor system.
Fuel flow seemed to be off a bit between what the new JPI indicates and what the actual fill up quantities are. It seems to use about 7% more than indicated on the JPI.
I'm still running full rich for break in purposes. I flipped on the electric pump and fuel flow went from 11.4 down to 7.5 gph. Same power setting.
The fuel flow transducer is in line between the mechanical pump and a T fitting at the carb. The other inlet to the T fitting is the electric pump feed, which bypasses the flow sensor.
I'm not sure if this is plumbed correct(?), but it makes sense that flow would drop through the transducer with this plumbing setup.
My question is could this also allow some fuel to get fed through the electric feed circuit (bypassing the flow sensor) and account for the inaccurate readings I'm seeing in flow?
Thanks
I had chance to do some more flying again this weekend to continue the break in process.
PA28 180B fresh overhaul and new monitor system.
Fuel flow seemed to be off a bit between what the new JPI indicates and what the actual fill up quantities are. It seems to use about 7% more than indicated on the JPI.
I'm still running full rich for break in purposes. I flipped on the electric pump and fuel flow went from 11.4 down to 7.5 gph. Same power setting.
The fuel flow transducer is in line between the mechanical pump and a T fitting at the carb. The other inlet to the T fitting is the electric pump feed, which bypasses the flow sensor.
I'm not sure if this is plumbed correct(?), but it makes sense that flow would drop through the transducer with this plumbing setup.
My question is could this also allow some fuel to get fed through the electric feed circuit (bypassing the flow sensor) and account for the inaccurate readings I'm seeing in flow?
Thanks
