For 1990-2009 cars

Condition | Action
--- | ---
Warning: Refer to Hot Exhaust System Warning in the Preface section. DEFINITION: An exhaust leak may show stains at the area of the leak. The leak may be felt by holding a hand close to the suspected areas or using a smoke pencil. The leak may make a popping or hissing noise.

Refer to Symptoms - Engine Exhaust prior to beginning this table.

Misaligned or improperly installed exhaust system components | Caution: Refer to Fastener Caution in the Preface section.

• | Align and tighten the exhaust system components to the specifications. Refer to.

• | Ensure the exhaust hangers are in the proper locations and not loose. Refer to Exhaust Hanger Mounting Bracket Replacement.

Exhaust leaks at the following connections:

• | Exhaust manifold to pipe

• | Flanges

• | Pipe clamps

Caution: Refer to Fastener Caution in the Preface section.

Tighten the components to the specifications.

Seals or gaskets leaking:

• | Exhaust manifold to cylinder head

• | Exhaust pipes to exhaust manifold

• | Catalytic converter connection

Replace the leaking seal or gasket. Refer to the affected components procedure for service.

Irregularities at the mating surfaces on the flange connections | Repair as required or replace the affected component. Refer to the affected components procedure for service.
Exhaust manifold cracked or broken | Replace the exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side or Exhaust Manifold Replacement - Right Side.
Exhaust system component connection welds leaking | Replace the leaking component. Refer to the affected components procedure for service.
Muffler or resonator, if equipped, damaged or leaking at the seams | Replace the affected muffler or resonator, if equipped. Refer to Exhaust System Replacement.