...but to answer the question, they're mechanical tappets, and the adjustment is 0.1mm intake and 0.25mm exhaust (that's from memory, so do check the manual which will also tell you what order to do them in) I reckon Dave's right though. Tappets don't just suddenly change unless something serious has gone wrong, and manifold gaskets i a really common one. Martin Dave Swingle wrote: >I would bet money that it's an exhaust leak at the manifold. More >often than not, someone not familiar with the car makes this mistake. > >Dave Swingle > > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/