Exhaust Leakage: 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. 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

⁽¹⁾	Go to TORQUE SPECIFICATIONS in appropriate REMOVAL & INSTALLATION article.

⁽²⁾	Go to appropriate article in ENGINES.