Section 68 (2.0L DOHC Engine (Service Information) - Except Coupe): Lubrication: Operation
Refer to Fig 1 for lubrication system flow.
Engine oil drawn from the oil pan sump through the pickup tube is pressurized by the pump and routed through the full-flow filter to the main oil gallery running the length of the cylinder block. A diagonal hole in each bulkhead feeds oil to each main bearing. Drilled passages within the crankshaft route oil from main bearing journals to connecting rod journals. A vertical hole at the number five bulkhead routes pressurized oil through a restrictor and up past a cylinder head bolt to an oil gallery running the length of the cylinder head. The restrictor, an integral part of the cylinder head gasket, provides increased oil flow to the main oil gallery. The camshaft journals are partially slotted to allow a predetermined amount of pressurized oil to pass into the bearing cap cavities with small holes directed to spray lubricate the camshaft lobes. Oil returning to the pan from pressurized components supplies lubrication to the valve stems. Cylinder bores and wrist pins are splash lubricated from directed slots on the connecting rod thrust collars.
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