- 10mm socket wrench
- 12mm socket wrench
- 14mm socket wrench
- 17mm socket wrench
- Flat-head screwdriver
- Timing light
Step 1: Locate the timing marks
Open the hood of your 3000GT and locate the timing marks. The timing marks are located on the timing belt cover and the crankshaft pulley. The timing mark on the timing belt cover is a small notch, and the timing mark on the crankshaft pulley is a small dot.
Step 2: Remove the timing belt cover
Use the 10mm socket wrench to remove the bolts holding the timing belt cover in place. There are four bolts on the top of the cover and two bolts on the bottom.
Step 3: Set the engine to TDC
Turn the crankshaft pulley clockwise until the timing mark on the crankshaft pulley aligns with the notch on the timing belt cover. This will set the engine to top dead center (TDC).
Step 4: Loosen the timing belt tensioner
Use the 14mm socket wrench to loosen the bolt that holds the timing belt tensioner in place. The timing belt tensioner is located on the front of the engine, near the top.
Step 5: Adjust the timing belt
Use the flat-head screwdriver to pry the timing belt tensioner away from the timing belt. This will loosen the timing belt. You can now adjust the timing belt by moving it one tooth at a time.
Step 6: Tighten the timing belt tensioner
Once the timing belt is adjusted, tighten the timing belt tensioner bolt. The tensioner bolt should be tightened to 25 ft-lbs.
Step 7: Verify the timing
Use the timing light to verify that the timing is correct. The timing should be set at 10 degrees BTDC. If the timing is not correct, repeat steps 4-6.
Step 8: Reinstall the timing belt cover
Install the timing belt cover and bolts in the reverse order that you removed them.
