How do you check timing on a 1991 Honda CRX?

To check the timing on a 1991 Honda CRX, first ensure the engine is at operating temperature and then turn off the engine. Locate the timing marks on the crankshaft pulley and the timing cover. Use a timing light to illuminate the marks while the engine is idling at the specified RPM (usually around 800-900 RPM). Adjust the timing as necessary by loosening the distributor and rotating it until the timing mark aligns correctly with the specified degree.