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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Diagnostic Information and Procedures >> Exhaust Leakage

Exhaust Leakage

Exhaust Leakage

Condition Action
CAUTION: Refer to Hot Exhaust System Caution .
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
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
  • Catalytic converter to exhaust manifold
  • Catalytic converter to muffler
Replace the leaking seal or gasket. Refer to the following:
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 (2.9L)  or Exhaust Manifold Replacement (3.7L) .
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 Muffler Replacement .