LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1371 (Engine Exhaust System) >> Diagnostic Information and Procedures >> Exhaust Leakage

Exhaust Leakage

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Exhaust Leakage

Problem Action
CAUTION: Refer to Exhaust Service Caution in Cautions and Notices.
IMPORTANT: Refer to Symptoms - Engine Exhaust  prior to beginning this table.
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.
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
  • EGR connections
 Replace the leaking seal or gasket. Refer to the affected components procedure for service.
Exhaust manifold cracked or broken Replace the exhaust manifold. Refer to Exhaust Manifold Replacement (2WD)  or Exhaust Manifold Replacement (AWD)  .
Exhaust system component connection welds leaking Replace the leaking component. Refer to the affected component's procedure for service.
  • Muffler damaged or leaking at the seams.
  • Pipe damaged or leaking
 Replace the affected muffler or pipe. Refer to one of the following procedures:
scientia non olet · About LEMON Manuals