9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Lifter / Lash Adjuster: Description and Operation
The valve gear incorporates hydraulic cam followers, which keep the valve clearance within a limited working range of 2.05 mm (0.081 inch), between
18.75 and 20.8 mm (0.738 - 0.819 inch) from the camshaft bearing seat to the end of the valve stem.
Each cam follower has two storage chambers and one high-pressure chamber. The opening of the port between the high-pressure chamber and the
adjacent storage chamber is controlled by a spring-loaded ball valve. A return spring in the high-pressure chamber acts on the sliding piston, to eliminate
any clearance between the cam follower and the cam. At the sometime, the high pressure chamber expands and makes up the oil volume, to compensate
for leakage losses through the passage between the piston and the cylinder, occurring at actuating pressure.
NOTE: Under some conditions, the hydraulic cam followers may give rise to a chattering noise of varying intensity. In most cases, the noise will be
short-lived and no remedial action will need to be taken.
