DEFINITION: The system is leaking exhaust gasses.

1. Inspect the exhaust pipe connections.
2. Tighten as needed. Refer to Fastener Tightening Specifications .

Is the leak gone?

System OK

Go to Step 2

1. Inspect for damaged or improperly installed gaskets.
2. Replace as needed.

Is the leak gone?

System OK

Go to Step 3

1. Inspect for loose exhaust flange connections.
2. Tighten as needed. Refer to Fastener Tightening Specifications .

Is the leak gone?

System OK

Go to Step 4

1. Inspect for burned or corroded exhaust pipes.
2. Replace as needed. Refer to one of the following:

•	Catalytic Converter Replacement

•	Muffler Replacement

Is the leak gone?

System OK

Go to Step 5

1. Inspect for leaks in the exhaust manifold.
2. Tighten bolts or replace the manifold as needed. Refer to one of the following:

•	Exhaust Manifold Replacement in Engine Mechanical - 3.5L

•	Exhaust Manifold Replacement in Engine Mechanical - 3.8L

Are the repairs complete?

System OK