How do you reset the timing on a 1985 Oldsmobile 98?

To reset the timing on a 1985 Oldsmobile 98, start by ensuring the engine is at operating temperature and turn it off. Disconnect the timing connector (usually a single wire) to set the timing to base specifications, then start the engine and use a timing light to check the timing mark on the crankshaft pulley against the timing tab. Adjust the distributor by loosening the hold-down bolt and turning it until the timing light shows the correct timing specification, typically around 6-10 degrees BTDC. Finally, reconnect the timing connector and ensure all components are secure before testing the engine.