Chasing an increasingly noisy Hydroboost pump.
I've bled it every which way under the sun, but cannot get it to stay quiet for more than 40 minutes of driving. I ordered a new pump.
RockAuto wholesaler closeout, got the pump for $58CDN (about $40US). Two days of anger management issues and profanity, and it's in and bled, and appears to be working great.
At one point I had to turn the "Blues" off on the stereo, as the songs were just too dang "happy." Black Sabbath to the rescue.
And had a visit from a friend today: