Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | When cold and after a warmup, check for heat shields that contact the exhaust pipes. Are the heat shields misaligned or loose? | -- | ||
2 | Replace the heat shield fasteners as necessary. Is there still exhaust noise? | -- | System OK | |
3 | Check for leaks at the exhaust manifold or the pipe connections. Are there leaks? | -- | ||
4 | Tighten the leaking connections according to specifications. Refer to Fastener Tightening Specifications Is there still a exhaust noise? | -- | System OK | |
5 | Inspect the exhaust muffler with exhaust pipe and tail pipe. Is the exhaust muffler with exhaust pipe and tail pipe burned or blown out? | -- | ||
6 | Replace the exhaust muffler with exhaust pipe and tail pipe. Refer to Muffler Replacement . Is there still exhaust noise? | -- | System OK | |
7 | Check for a leak at the exhaust crossover pipe at the manifold flange. Is there a leak? | -- | ||
8 | Repair the leak. Is there still exhaust noise? | -- | System OK | |
9 | Check for a cracked or broken exhaust manifold. Is the exhaust manifold cracked or broken? | -- | ||
10 | Replace the exhaust manifold. Refer to Exhaust Manifold Replacement . Is there still exhaust noise? | -- | System OK | |
11 | Check for a leak between the exhaust manifold and the cylinder head. Is there a leak? | -- | System OK | |
12 | Tighten the exhaust manifold-to-cylinder head fasteners to specifications. Refer to Fastener Tightening Specifications in Engine Mechanical - 3.0L (L46). Is there still exhaust noise? | -- | -- | System OK |
