Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Oldsmobile Aurora V8-4.0L VIN CFACTORY OEM SERVICE PROCEDURE
Oil Pump Installation
1. Install the oil pump drive spacer into the oil pump so that the drive flat engages the pump rotor.
2. Position the oil pump on the crankshaft.
3. Install the retaining bolts.
4. Apply upward pressure on the pump while tightening the three retaining bolts. Tighten the bolts in the sequence (1,2,3) shown.
4.1. Tighten the oil pump mounting bolts in sequence to 10 Nm (89 inch lbs.).
4.2. Tighten the oil pump mounting bolts in sequence to 26 Nm (19 ft. lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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