I had the cam phaser on pass side replaced about 2 years ago on my truck , it had about 34000 miles but , of course out of warranty .
I park it ( well used to ) on the driveway on an incline front end higher , I noticed a rattle when starting , now I park with front end down and the rattle does not happen , could it be oil starvation to cam phaser that damages the phaser ? or just terrible design