How to Patch an Exhaust Pipe

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Substances like salt can wear through the metal of an exhaust pipe, resulting in cracks and holes. A tail pipe should be replaced when it gets worn through, but you can temporarily repair it during the winter, or if your budget is tight. This article will tell you how to patch an exhaust pipe.

Steps

Muffler Repair Tape

1. 1
   Clean the area around the hole or crack in the tailpipe. This ensures a good seal around the affected area.
2. 2
   Preheat your car if it is below 70ºF or 21ºC until the metal is warm to the touch. Do not heat up the car if it is above 70ºF (21ºC).
3. 3
   Remove any paper or plastic backing from the tape on both sides.
4. 4
   Wrap the tape around the affected area until it is completely covered. Overlap the tape as necessary until it is about an inch (25.4mm) thick.
   • It may be necessary to put a piece of aluminum over the hole before taping it if the area is too hot to touch.
5. 5
   Secure each end of the repair with wire or tape. Drive or idle your car for 20 minutes until the heat can fuse the tape to your tailpipe.

Muffler Repair Putty

1. 1
   Clean the area around the hole or crack in the exhaust pipe with a wire brush. This ensures a good seal around the affected area.
2. 2
   Dampen the repair area with water. If the putty dried out in its container, add some water to it.
3. 3
   Administer putty with a knife. Press the putty deep into the hole and the surrounding area.
   • If you have a big hole, reinforce the area with wire or metal screening before adding the putty.
4. 4
   Idle your engine for 10 minutes to start the drying process. Do not drive the car for 24 hours after the repair is made.

Warnings

• Do not touch the muffler or tailpipe of a car that has been running for more than a few minutes. The parts can be very hot and cause severe burns.
• Ensure you wrap the muffler tape and anchor it securely or the repair can fail.
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  Things You'll Need

  • Repair Tape or Putty
  • Wires
  • Aluminum can or foil (optional)
  • Water (if using putty)
  • Putty knife

  
  

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