Try purging by leaving the bypass valves closed, Run throttle at about 3/4's then move sticks slowly full forward then full reverse. Do this 8-10 times back and forth slowly and see if it makes a difference.
You need a fluid flow meter to test hydro pumps, Their in the $350-400 range in which is why some smaller shops don't have one......
Originally Posted by piston slapper
You never learn anything until you admit you don't know it all...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!