1992 Toyota Truck Pickup 2WD Cooling and Exhaust Engine Ignition Timing Adjustments Manual

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1. Connect a tachometer test probe to terminal IG of the check connector, Fig. 211 2. NOTE: Never let the tachometer lead touch ground as this could cause damage to the igniter and/or coil. Be sure to check that your tachometer is compatible with this ignition system. Consult the operating manual for your instrument. Service Check Connector 3. Fig. 223 Ignition Timing (10) Check idle speed . 4. Idle Speed : 800 rpm Using a timing light, verify that the timing mark on the timing cover is aligned with the mark on the crankshaft pulley, Fig. 223 5. Ignition Timing: 10°BTDC at idle Tighten the distributor bolt and recheck the ignition timing. 6. Remove service wire. 7. Check idle advance timing with service wire removed. 8. Ignition Timing: 8°BTDC at idle Check idle speed and adjust if necessary, COMPUTERIZED ENGINE CONTROLS. 9. Disconnect tachometer and timing light from engine. 10. Timing Belt Removal Notes Fan Shroud Removal & Installation Remove radiator fan upper and lower shrouds. 1. Installing Power Steering Pump And Belt Remove power steering pump drive belt and pump. 2. Disconnect No. 2 and No. 3 air hoses from air pipe. 3. 4. Fan Removal Remove alternator drive belt , cooling fan, belt guide and fan pulley. 5. Remove No. 2 timing belt cover. 6. Fig. 6 Aligning Timing Marks Place No. 1 cylinder at TDC of compression stroke by turning the crankshaft pulley and aligning pulley groove with the “0” mark on the No. 1 timing belt cover. Ensure alignment marks on the camshaft timing sprockets and the No. 3 timing belt cover are correctly aligned, Fig. 6. 7. If not, turn the crankshaft pulley one complete revolution. 8. Crankshaft Pulley Removal