Exhaust Leakage: Definition
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
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. For possible cause and diagnosis, see EXHAUST LEAKAGE DIAGNOSIS table.
EXHAUST LEAKAGE DIAGNOSIS
| Possible Cause | Check/Repair | ||||
|---|---|---|---|---|---|
| Misaligned Or Improperly Installed Exhaust System Components | (1) Align & Tighten Components To Specification | ||||
| Exhaust Leaks At Exhaust Manifold-To-Pipe, Flanges Or Pipe Clamps | (1) Tighten Components To Specification | ||||
| Seals Or Gaskets Leaking At Exhaust Manifold-To-Cylinder Head, Exhaust Pipes-To-Exhaust Manifold, Catalytic Converter Connection, Or EGR Connections Or AIR Connections-To-Exhaust Manifold Or Cylinder Head | Replace Leaking Seal Or Gasket | ||||
| Irregularities At The Mating Surfaces On The Flange Connections | Repair Or Replace Affected Component As Required | ||||
| Exhaust Manifold Cracked Or Broken | (2) Replace Exhaust Manifold | ||||
| Exhaust System Component Connection Welds Leaking | Replace Leaking Component | ||||
| Muffler, Resonator (If Equipped) Or Pipe Damaged, Or Leaking At The Seams | Replace Affected Muffler, Resonator Or Pipe | ||||
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