Neutralizing Exhaust System

The exhaust system must be neutralized while it is hot or the thermal expansion of the pipe will place a strain on the exhaust hanger insulators. While the exhaust system is at its normal operating temperature, loosen all of the nuts and bolts and reposition as required so that they hang free and straight. Next, loosen the exhaust manifold4o-exhaust inlet pipe nuts and start the engine. Shift into gear while idling, then shift back to NEUTRAL. Shut off the engine and tighten the exhaust manifold-to-exhaust inlet pipe nuts and the rest of the nuts and bolts. Be certain that no grounding condition exists and that adequate clearance exists along the entire length of the exhaust system.