Swimming pools blog

Hello folks, new to this group thing, but maybe it is the way to go. I
have an 8 year old in ground pool. For the first seven years the
Pressure through the filters(cartridge) was a rock solid 30 psi. About
a year ago the pressure dropped to 20 psi. It has been working but it
seems to be getting worse, now averages between 18-20. I figured it is
time to do something about it. Today I pulled the pump motor and
disassembled it, ouch, not a good idea. Looked okay to me. After
breaking a few things I finally got it all back together and
reinstalled. Results still 20 psi. I checked everything I could think
of for clogs or leaks but have found none. I do have some air in the
basket but can’t remember a time when I didn’t. Is it possible for a
motor to work but loose its efficiency, causing this drop in pressure?
It doesn’t sound as strong as it once did, it is an American Products
ultra flow 2hp. I thought I would give it one more attempt before I
call a professional. I am mechanically inclined and usually can fix

anything but this one has my stumped.