my tour has 85k on her. (ever wonder why they are always "hers"?)
i don't know how long mine has been knocking as i usually have the radio up loud, and when its down low its cuz the kids are in the car and then i'm driving like a mature responsible human being instead of the way i normally drive.

i 1st noticed the knock about a month ago while spraying TB cleaner.
i'm glad bnoon chimed in.
direct question...
how does one troubleshoot for rod bearings? is there an exact procedure to decypher these things?
thanks guys
tim.