Could be blocked line, lose the hydraulic lines on the ether end of the bucket and run machine briefly, to check and see if oil comes out and or air. If that is all good check ur vale control flow silinodes..looks like the pic
Ok we got the valve control back and i did a air pressure test and got one of the caps blew right off with about 15psi. Iam thinking some this wrong with spool or the hole vlave body?
Now when u say valve, do u mean spool valve or relief valve. We took the valve control off last night and took it to hydraulic shop to get new seal done, thier was some water in the system milky hydrolic fluid.
So i bought a jd 260 skid steer. Had water in hydraulic fluid, but now when i start the machine up the bucket tiltes all the way down without mrle pressing on the peddle.