Help, cannot get my PS fluid to stop foaming
 

I am trying to get the 1989 964 PS pump to stop groaning. I have pumped 4 gallons of fluid through the system and the output hose continues to pump out foaming frothing PS fluid. What am I doing wrong?

Resevoir is disconnected entirely.
Input to pump is connected to a hose and dipped into a 2 gal tank of Fresh PS fluid
Return hose is dipped into a 3/4 inch hose and dipped into a collection basket.

picture is of 4 gallons of PS fluid foaming.

\ http://forums.pelicanparts.com/uploa...1613583787.jpg

That looks delicious !

Your set up is sucking air.
Change from a suction lift to a suction head.
Then crank/start the engine and let it run for a few seconds at a time (5 seconds maybe) then turn off. Then keep the container filled. Don't let the container run out of fluid. Do it a few times until the fluid stream is solid...

I'll just actually leave the reservoir connected and the return hose discharge to an open container.
Just run the engine a few seconds at a time not letting the reservoir get empty.
Fill it up then repeat.

If it still groans, the reservoir screen could be plugged up.