9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Valve Clearance: Testing and Inspection
NOTE: This procedure is done with the cylinder head removed.
The valve clearance is checked relative to the working range of the cam follower. The checking values for the valve clearance are 19.5 ±0.05 mm (0.768
±0.002 inch) minimum, and 20.5 ±0.05 mm (0.807 ±0.002 inch) maximum. The setting values are 20.0 mm (0.787 inch) minimum, 20.4 mm (0.803
inch) maximum, with a nominal value of 20.2 mm (0.795 inch). The valve clearance is equivalent to the distance between the end of the valve stem and
the camshaft bearing seat. Before the valve clearance can be checked, the camshafts and cam followers must be removed.
Check the valve clearance using tool 83 93 753, or equivalent as follows.
^
Place the measuring head across two of the camshaft bearing seats. Line up the instrument to read the depth to the end of the valve stem.
^
Check that when the instrument is displaying the maximum depth reading of 20.5 mm (0.807 inch) it actually reaches the end of the valve stem,
which will be confirmed by the fact that the measuring head does not make contact with the bottom of the bearing seat closest to the instrument.
^
Thereafter, check that the contact point of the instrument does not touch the end of the valve stem when showing the minimum depth reading of
19.5 mm (0.768 inch).
^
The valve clearance is correct when the reading obtained is between the minimum and maximum values.
^
If the valve clearance deviates from the specified checking values, adjustment must be made to the valve stem or the valve seat: if the value is
lower than the minimum value then the length of the valve must be reduced; if the value is greater than the maximum value, then the valve seat
must be milled. The nominal value for adjusting the position of the valve is 20.2 mm (0.795 inch).
