Provided your Ford Expedition SUV is forming deep noises from the exhaust system, it doable mode the muffler has corroded or been damaged. Provided the muffler has any holes or leaks, you demand to modify it. Replacing a muffler is cher no problem, as one is merely bolted to the exhaust system and hanging from the chassis. On the contrary you entail to receive the correctly muffler for your specific Expedition. You extremely must safely collar the vehicle while off the ground for this installation, as you Testament be underneath a mere mammoth vehicle.
Instructions
1. Hoist and assist the Expedition on a abundant jack stand. Don't benefit the jack included with the vehicle, as it won't safely backing the vehicle safely Sufficiently for you to get-up-and-go under it. Grasp this jack nearby. Place the bolts attaching the muffler to the exhaust course and the rubber hangers supporting it to the chassis.
2. Lubricate the muffler's bolts with a athletic, spray-based lubricant, as they should be as well rusty. Wait drawn out Sufficiently for the lubricant to drudge against the rust - heavily rusted bolts may must up to Day and night.
5. Balance the new muffler on the Expedition's jack and raise it until it is barely against the chassis. Bolt the muffler to the exhaust system, using new gaskets with the bolts. Slip new rubber hangers onto the mounting brackets along the muffler. Lower the jack while balancing the muffler with your chargeless handwriting to keep it from falling. You may need another person's help.
4. Clean the exhaust system's mating surfaces where the bolts are fastened. Use a good automotive cleaner on a rag. Lightly tap or chip off the gaskets from the bolts if they didn't fall off themselves. Discard them. Loosen the bolts on the brackets for the muffler hangers.
3. Agency the muffler with the Expedition's supplied jack by raising it until the muffler isn't hanging by the rubber hangers. Pull the hangers off the muffler and chassis. Remove the bolts.
6. Lower the muffler's jack slightly until the muffler is at the proper height from the chassis. Tighten the bolts on the hanger mounting brackets, then lower the jack remainder of the way and remove it.
7. Start the Expedition's engine while it is still raised on the main jack stand. Carefully feel around the bolts for air pulsating out in the area. If you feel leaking air, check to see if the bolts are tight and the gaskets are properly placed. Lower the vehicle only after the muffler is tightly fastened.
