Workshop Manuals Factory service & repair Vauxhall
Vauxhall Astra J11 · Engine
11 · Engine

Exhaust Leakage

Make
Vauxhall
Model
Astra J
Section
Diagnostic Information and Procedures › Miscellaneous › Exhaust Leakage
EngineExhaust Leakage

Exhaust Leakage



Problem
Action

Warning: While engine is operating, the exhaust system will become extremely hot. To prevent burns avoid contacting a hot exhaust system.
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 components to the specifications. Refer to Fastener Tightening Specifications .

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
•  AIR connections to the exhaust manifold or cylinder head


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 .

Exhaust system component connection welds leaking
Replace the leaking component. Refer to the affected component's procedure for service.

Duct damaged or leaking at the seams
Replace the affected duct. Refer to Air Cleaner Inlet Duct Replacement .
 

Parts & tools for this job For Vauxhall Astra

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