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.
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HOMESERVICE MANUALSOLDSMOBILE196998 ENG CD UO, NOT AVAILABLE TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEFUEL DELIVERYMECHANICAL FUEL PUMPSTESTING VACUUM PUMPHIGH OIL CONSUMPTION
1969 Oldsmobile 98 Eng CD UO, Not Available Trans
High Oil Consumption
1969 Oldsmobile 98 Eng CD UO, Not Available TransSECTION High Oil Consumption
NOTE:
Piston type vacuum pumps require some oil for piston and cylinder wall lubrication and oil traces do not indicate a defective pump. Sudden increase in oil consumption may indicate a defective pump.
To test for excessive oil consumption, install a 2" glass bown type fuel filter (with filter element removed) in vacuum pump outlet line. An accumulation of 1/4" of oil in the bowl after 25 miles of operation indicates a defective pump.
RENDER: 1.0x
NO RELATED
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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.