Sephia Sedan L4-1.6L SOHC 16V (1993)
Examples of the Engine Oil Pump Assembly
Inspection Procedure and Guidelines:
1. Inspect the incident engine using the Engine Core Data Form included in (TSB: ENG 042); then proceed to step #2.
NOTICE
Refer to TSB ENG 042 published March 2009 (Remanufactured Engine Program) for details. Depending on the engine diagnosis results, the repair may
not require a short or long block replacement to resolve the condition.
2. If a short block replacement has been determined as the repair option with any of the following conditions, then ALWAYS replace the oil pump with a
new pump.
^ Low or no oil pressure
^ Excessive foreign/metallic debris found inside the oil pan or the oil pick-up screen.
^ Continuous engine knocking noise (after isolating the accessory drive component such as the power steering pump, air conditioning compressor, water
pump, or alternator)
^ Engine friction damage such as piston/cylinder wall scuffing, main/rod bearing/journal scuffing, excessively worn thrust bearing, or seizing of rotating
components.
^ Overheated engine that caused internal engine damage.
3. If a short block replacement is not required and none of the existing conditions from step #2 have been found refer to the following inspection points
of the engine oil pump prior to reuse.
^ Rotate the oil pump by hand (rotor/sprocket) to confirm that it rotates freely without much resistance Replace oil pump if internal binding damage is
encountered.
^ Visually inspect the condition of the front main oil seal in the oil pump (engines using a front case assembly oil pump) for wear damage or visual leaks
Replace the front main oil seal if necessary to ensure a proper seal.
NOTICE
If the front main oil seal is found partially pushed out from the front case assembly, you should check for excessive crankshaft thrust endplay before
replaceing the seal.
