Noisy Hydroboost after line replacement

[baja60]

Replaced the lines from the pump and gear box that go to the hydroboost on the firewall and the system is very noisy now. I found a post on here somewhere with the vac procedure to draw the air from the system and did that with some success (a few times now actually). The system will be quiet for a little while (maybe a day?) after pulling vaccumme on the system but the noise comes back. It seems to be coming from the pump to hydroboost line mostly. The line change out wasnt a big deal but I am hoping there wasnt something in the end of one of the old lines i was supposed to install in the new lines that I didnt notice. Any ideas?

[dannyboy950]

Either you are still sucking air somewhere or you did not get it all bled out.

As you bled the air out did you top the system back up with fluid?

[baja60]

yeah i topped it off as i needed to. If it were sucking in air somewhere, wouldnt it be leaking when shutdown? everything is clean and there arent any leaks. How long can it take to pull the air out of the system? minutes or hours?

[ZMANN]

what fluid did u use

the hydro boost and steering can have air but usually a few lock to lock turns while holding at full stop all while activating the hydro unit usually gets it done fast

[baja60]

I used the Mercon from Oriley.