Just bought a 1998 Sportrak 16v with 85,000 on the clock, seemed ok for about a fortnight but then developed the rattles. I think its the tappets, but not certain, it does reduce as it gets warmer, could there be another explanation? (it is a rattle rather than a knock). If you think its the tappetts whats the gaps and procedures, I can't get hold of any literiture at the moment.
Cheers; Dave P