I had similar ticking, first it was from 2k up to 4k but it would switch around a bit sometimes. Starting at 3 instead of two etc. I'd heard knocks before but I didn't think that's what it was. Ended up being totally fried bearings and a bad valvespring, not sure which was actually clicking. Mine took 4 months before it gave out so even if that's what it was you might be ok to drive. I wouldn't, and if you do be very gentle until you know for sure.
Looking for another CSVT
~Blas~
