See Figure 1
The or heat insulator is the covering over the exhaust manifold and is secured by three or four bolts. Remove the O 2 sensor electrical connection if equipped. Unfasten the bolts securing the insulator to the manifold. Remove any gasket material and check the insulator for leaks, cracks or corrosion. Install a new gasket to the manifold, then attach the insulator. Tighten the mounting bolts to 14 ft. lbs. (19 Nm).