Here is a step-by-step guide on how to properly torque the head bolts on a 1992 Continental 3.8L V6 engine:
1. Remove the intake manifold, the valve covers, and the spark plugs.
2. Clean the head bolt threads and the cylinder head surfaces with a wire brush.
3. Dip the threads of the head bolts in engine oil.
4. Install the head bolts and hand-tighten them until the head bolts are snug.
5. Use a torque wrench to tighten the head bolts in three steps:
- 25 pound-feet (34 Nm)
- 50 pound-feet (68 Nm)
- 65 pound-feet (90 Nm)
6. Repeat steps 2 to 5 for the remaining head bolts.
7. Reinstall the spark plugs, the valve covers, and the intake manifold.
Note: It is important to use a torque wrench to properly tighten the head bolts to ensure that the head bolts are tightened to the correct specification. Over-tightening the head bolts can cause damage to the engine.
