Basically, new owners should assume they will be changing all the rubber components if it's high miles and will most likely have carbon build up that will need to be cleaned. I don't know how I could have cleaned mine without removing the intake.
High miles means work to be done.
Don't trust the sellers for what they say.
2001 bmw 330 ci 196k miles white
(bought used in 2/2013)(history, unknown) use to be unknow....NOW IT STARTS AND RUNS PERFECT...love it.
1997 f150 xlt 4x4 386k miles R.I.P., white
(bought new in 1997)
newly REBUILT - 200 NEW MILES so far
2003 roadking 61k miles white
(bought used in 2005)