OK I need help. I noticed that my 582 seems to be pulling all but, a small quantity of the fuel out of the glass tube fuel filter. I had a loss of rpm during climb out a month ago. Back on the ground I noticed rpm variations from 6000 rpm to 4900 rpm, this continued for several minutes. I shut the plan down and installed a new fuel pump, rebuilt carbs, replaced the primer, and cleaned the fuel filter. Pulse line is newer and about 16" long.
Started plane after rework and noticed the fuel being pulled from the filter to almost nothing. I removed the two fuel caps, no change. I disconnected the fuel filter from the gas supply line on the tank side and opened each shut off valve to check fuel flow. IT SEEMS ADEQUETE