CONDITION
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POSSIBLE CAUSES
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CORRECTION
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EXCESSIVE EXHAUST NOISE (UNDER HOOD)
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1. Exhaust manifold cracked or broken.
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1. Replace manifold.
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2. Manifold to cylinder head leak.
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2. Tighten manifold and/or replace gasket.
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3. Exhaust flex joint to manifold leak.
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3. Tighten fasteners or replace gasket.
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4. Exhaust flex joint.
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4. Replace catalytic converter assembly.
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5. Pipe and shell noise from front exhaust pipe.
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5. Characteristic of single wall pipes.
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EXCESSIVE EXHAUST NOISE
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1. Leaks at pipe joints.
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1. Tighten or replace clamps at leaking joints.
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2. Burned, blown, or rusted out exhaust pipe or muffler.
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2. Replace muffler or exhaust pipes.
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3. Restriction in muffler or tailpipe.
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3. Remove restriction, if possible or replace as necessary.
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4. Catalytic converter material in muffler.
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4. Replace muffler and converter assembly. Check fuel injection and ignition systems for proper operation.
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