Content Summary : The engine lubrication system includes many small passages. Dirtyor contaminated engine oil may con-tain microscopic particles that canclog these passages. If the oil supplyto the hydraulic lash adjusters (HLAs)on the 2.2 liter SOHC engine isblocked by this debris, oil pressureand supply to the HLAs will drop. Aticking noise from one or more HLAmay result. This article addresses theprocedure from disassembling therocker assemblies and HLAs to exam-ine for blockage or other damage. Engine Oil PressureMeasurement Low oil pressure may also cause noisy HLAs. Use the following proce-dure to measure the oil pressurebefore further disassembly. Remove the generator from its bracket. Disconnect the connector andterminal from the generator. Removethe v-belt cover. Loosen the lock boltand slider bolt, and remove the gener-ator v-belt. Remove the generator lockbolt. Remove the generator bolt.Disconnect the connector from the oilpressure switch. Remove the oil pres-sure switch from the engine cylinderblock. Connect the oil pressure gaugehose to the engine block. Start theengine, and measure the oil pressure.