Skoda OCTAVIA MK1 Service Manual page 84

Grind in valve/valve seat -arrows- with
–
fine grinding paste until a perfect contact
pattern is achieved.
– Check tightness of valves.
The inspection can be carried out with
water colour (perfect contact pattern over
entire circumference) or by filling fuel into
the combustion chamber (no fuel must flow
out at the valve seat).
Note
After installing the cylinder head, check the
hydraulic bucket tappets → Chapter.
84