Adjusting the timing on a Geo Tracker is an easy project compared to many vehicles. Changing the timing on a Geo Tracker requires special tools and a clear understanding on engine mechanics. Adjusting the timing on a Geo Tracker occasionally to maintain high fuel economy and lower the exhaust emissions is part of routine maintenance.
Start the engine and allow it to reach normal operating temperature. Turn the ignition off, locate the test switch module behind the right hand headlight assembly, and remove the cover. Use a small gauge wire to jump terminal "4" and "5," located at the bottom left and middle terminals.
Connect the timing light to the battery if necessary and then to the number one ignition wire located at the far, driver's side of the engine. Clean off the crank pulley at the front of the engine to expose the timing marks. Start the Geo Tracker and let it idle for 2 minutes.
Point the timing light at the crank pulley and determine the amount of adjustment needed. Loosen the distributor flange bolts and rotate the distributor slowly until the crank pulley mark matches the middle line on the timing light.
Tighten the distributor flange bolts and recheck the timing. Make any additional adjustments and turn off the engine. Remove the timing light and jumper wire. Reconnect the number one ignition wire and replace the cap on the test switch module.
