Smokey Cuore L701


I have bought a very tidy 1999 Cuore for my daughter as a first car. Its a 2 owner and has only covered 37500 miles from new - but - from start up it smokes. Is this likely to be valve seals Unknw There is now power loss as the engine runs too well. If this is valve stem seals can they be replaced in place (like the old Ford escorts) or is it a top end strip down Unknw Any advice or help on this little problem would be greatly appreciated. I also see manual available here on CD will get one later too.
Thanks in advance - AG.