Vehicle Maintenance Basics: Replacing your Exhaust Flange Gasket
You probably love donuts as much as the next guy, and you definitely value your exhaust donut, which is more commonly known as the exhaust flange gasket. This gasket is used as a seal between the exhaust pipe and exhaust manifold. Much like all auto components, your exhaust flange gasket can wear out. Luckily, you can easily swap this out for a new one. Replacing your busted exhaust flange gasket may not be the easiest DIY job for the novice motorist. However, listed below are some simple steps to make this repair job as simple as possible.
Difficulty level: Moderate
Tools you'll need:
- Gloves and goggles
- Box-end wrench set
- Ratchet, long extension and socket set
- Oxyacetylene torch
- Sandpaper or emery cloth
- Exhaust pipe hanger tool
- Replacement gasket
- Replacement hardware (bolts, nuts, washers, lock washers)
- Perma-Tex gasket compound
Step 1: Before you get started, put on some safety goggles and gloves to help prevent any unwanted mishaps.
Step 2: Determine whether the flange is connected using nuts, bolts, and/or studs. Use the necessary tools to remove these hardware.
Step 3: If necessary, use your oxyacetylene torch to heat the edges of the flange nuts (not the bolts) to make them easier to remove.
Step 4: At this point, separate the flange connection. By releasing one or more exhaust hangers near the flange connection, the exhaust system is flexible enough to grant access to the mating surfaces of each mating flange.
Step 5: Clean every flange connection mating surface with sandpaper or emery cloth. If you used a torch earlier, then wait for the exhaust system to cool first.
Step 6: Apply Perma-temp compound on both sides of the gasket, and then place the new exhaust flange gasket between the flanges.
Step 7: Reconnect the flange hardware.
Step 8: Start your vehicle and check for leaks in the flange connection.
Step 9: If there are no leaks, then pat yourself on the back for a job well done!