Is your muffler rusted out or noisy? Do you want to replace your stock muffler that has a efficiency muffler for extra power and fuel overall economy? Replacing a muffler is often a job that most do-it-yourselfers can do, although it could possibly be physically demanding mainly because it ordinarily involves sawing or cutting from the outdated pipes on either side of the muffler and functioning while laying in your back. If that seems like too significantly effort, take your car to a muffler store and have them replace the old muffler. But when you wish to conserve on your own some money, purchase a replacement muffler at your nearby auto parts tore and comply with these measures to change the muffler oneself.

Tools Essential: Jack; safety stands; wrenches; hacksaw; muffler chisel; hammer; security glasses.

PARTS Desired: Replacement exhaust pipe or muffler; pipe clamps.

WHEN: When exhaust leaks or noise are observed, or you need to set up a unique style of muffler.

Place: The muffler is portion in the exhaust system and it is located right after the catalytic converter. Lots of motor vehicles have over one muffler, the 2nd getting termed a resonator.

NOTE: The unique equipment muffler and pipes on most cars are welded together as opposed to clamped or bolted together. What this means is you may most likely need to saw or cut the pipes apart to change the muffler.

WHAT To undertake: To begin with identify the nature with the issue by thoroughly inspecting the exhaust system from end to end. Most leaks take place at pipe connections or at tight bends inside the pipe. Mufflers rust via at the pipe connections and along end and side seams (fig. 11-2). Converters have a tendency to rot off only at pipe connections.

1. With the motor vehicle parked on level ground, set the parking brake and spot the transmission in Park (automatic) or gear (manual). Also block the wheels to stop the automobile from rolling.

2. Increase whichever end on the car is vital to achieve access for the faulty exhaust part, and support the automobile on safety stands.

3. It may be required to help element of the exhaust system although removing a rusted out pipe or muffler. Use a brief piece of coat hangar wire to stop the pipes from dropping.

4. Find the muffler and note how it is attached for the pipes on either side.

In case the muffler has flanges with bolts, remove the bolts to replace the muffler.

When the muffler has clamps on one or both sides, remove the clamps to change the muffler. This commonly necessitates sawing or cutting the clamp due to the fact the nuts will in all probability be badly rusted and won’t turn. Presoaking the nuts with penetrating oil and applying warmth may possibly assist loosen them. One more possibility is usually to use a sizable breaker bar and 6 point affect socket to twist and break the rusted nuts off the clamps.
exhaust pipe cutter tool . muffler chisel . . pipe expander

If the muffler is welded on the pipes, your only choice would be to cut the pipes on either side utilizing a hack saw, Sawsall, pipe cutter or acetylene torch.
CAUTION!: If using a torch to lower the pipes, be extremely mindful to maintain the flame away from the fuel tank, fuel lines, brake lines or any other hoses or wiring.

Measure In advance of you lower the pipes! Measure the length from the new muffler end to end which includes each pipe mounting flanges. Ensure that you leave enough of your authentic pipes on both sides of your outdated muffler to ensure that both ends of the pipes will match at the least 2 inches in to the new muffler. Should you do not have sufficient overlap in the pipe connections any time you change the muffler, the exhaust system could leak (except if you happen to be welding the pipes collectively as opposed to clamping them).
remove outdated muffler

Never waste your time attempting to separate a muffler from badly corroded or rotten pipes. The outdated pipes will also have to be replaced.

If your exhaust pipes are nevertheless sound and also the muffler is clamped towards the pipes, the pipes should be reusable. Having said that, the muffler may perhaps be difficult to remove. Once an exhaust system accumulates plenty of miles, the connections develop into permanently rusted collectively. Warmth and penetrating oil are useless, and also the only approach to separate the muffler from its pipes will be to split open the outer muffler pipe flange about the inlet and outlet sides in the muffler with a muffler chisel. Be cautious to not damage the pipe. You only choose to cut open the flange so the pipe can be pulled from the muffler connection. When you harm the pipe, you could always use an adapter fitting to reconnect the pipe towards the muffler.

5. Set up the new muffler and/or pipes by slipping every finish into position. Pay attention to any markings around the muffler that indicate which path to install it (putting in it backwards could boost back strain and reduce sound handle). Make sure all pipe connections are shoved together as tight as they will go. When you have to “convince” them by pounding, use a rubber hammer to avoid denting or deforming the pipes.

At times a replacement pipe coupling or muffler flange is going to be dented or slightly bent from the parts keep, protecting against it from simply slipping into area. A special tool called a “pipe expander” or “muffler cone” is often inserted into the end in the pipe to restore its shape. A pipe expander pushes out while you tighten a bolt to reshape or expand the pipe. A muffler cone is pounded in to the pipe to expand or decrease the diameter from the pipe. Either tool can ordinarily be rented at an auto parts store.

6. The secret to getting rattle-free repair will be to cautious place the pipes Just before you tighten the clamps. Wiggle the pipes about until they align adequately and nothing at all touches the suspension or underside on the automobile. Make sure the exhaust system enables satisfactory area for the fuel tank, suspension travel and ground clearance. Then mount the new pipe clamps and tighten firmly.

7. Lower the vehicle and start the engine. Rev the engine and listen for virtually any exhaust leaks or rattles. Readjust and/or retighten the pipes if required.

8. Immediately after the automobile continues to be driven a number of hundred miles, it truly is a fantastic idea to examine and retighten the clamps as required.