SAAB WIS ONLINE

Exhaust Leakage

Exhaust Leakage


Condition Action
Refer to Hot Exhaust System Warning . 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
Align and tighten the exhaust system components to the specifications. Refer to Fastener Tightening Specifications .

Ensure the exhaust hangers are in the proper locations and not loose.


Exhaust leaks at the following connections:
Exhaust manifold to pipe

Flanges

Pipe clamps


Tighten the components to the specifications. Refer to Fastener Tightening 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.
Catalytic Converter cracked or broken Replace the catalytic converter. Refer to Catalytic Converter Replacement - Left Side (LF1) or Catalytic Converter Replacement - Right Side (LF1) .
Exhaust system component connection welds leaking Replace the leaking component. Refer to the affected component's 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 Muffler Replacement (LAU) Exhaust Muffler Replacement (LF1) .