they are usally hydrulic more lickly to be low on oil.oil pump or timing chain on later models
the car doctor, May 2007
i need the settings for a r (reg) tappets for a corsa
scott, December 2006
borrow the correct, ie year & engine size, haynes workshop manual from the library, it will tell you how difficult it is to do. you can tell by the spanner rating.
