Exhaust Noise. Buick Roadmaster 1996

For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---

1

1. Check to see if the exhaust pipes are contacting the heat shields.
2. Check if the heat shields are loose.
3. Inspect the system when cold and after warmup.

Are the exhaust pipes contacting the heat shields, or are the heat shields loose?

--

Go to Step 2

Go to Step 3

2

1. Tighten the heat shield bolts.
2. Align the exhaust system, if necessary.

Is the exhaust system making noise?

1.9 N·m (17 lb in)

Go to Step 3

System OK

3 | Check the manifold or pipe connections for leaks. Are there leaks at the pipe connections or manifold? | -- | Go to Step 4 | Go to Step 5
4 | Tighten the clamps at the leaking connections. Is the exhaust system making noise? | 35 N·m (26 lb ft) | Go to Step 5 | System OK
5 | Check the muffler to see if it has been burned or blown out. Is the muffler burned or blown out? | -- | Go to Step 6 | Go to Step 7
6 | Replace the exhaust muffler. Is the exhaust system making noise? | -- | Go to Step 7 | System OK
7 | Check the exhaust pipe to see if it has been burned or has rusted out. Is the exhaust pipe burned or rusted out? | -- | Go to Step 8 | Go to Step 9
8 | Replace the exhaust pipe. Is the exhaust system making noise? | -- | Go to Step 9 | System OK
9 | Check the exhaust pipe for leaks at the manifold flange. Is the exhaust pipe leaking at the manifold flange? | -- | Go to Step 10 | Go to Step 11
10 | Replace the gasket. Is the exhaust system making noise? | -- | Go to Step 11 | System OK
11 | Check to see if the exhaust manifold is cracked or broken. Is the exhaust manifold cracked or broken? | -- | Go to Step 12 | Go to Step 13
12 | Replace the manifold. Is the exhaust system making noise? | -- | Go to Step 13 | System OK
13 | Check to see if there is a leak between the manifold and the cylinder head. Is there a leak between the manifold and the cylinder head? | -- | Go to Step 14 | --
14 | Tighten the manifold-to-cylinder head stud nuts or bolts to specifications. Is the exhaust system making noise? | -- | -- | System OK