Detect Exhaust Leaks After Water Exposure

Cost Savings

Checklist Tasks

• Inspect exhaust joints and clamps for rust or discoloration from water entry.
• Listen for hissing or ticking noises near manifold and flex pipe.
• Feel near welds and seams for escaping gases—use caution with hot areas.
• Check for water dripping or excess condensation at seams after startup.
• Examine hangers and mounts for stretching or tears from thermal shock.
• Look for soot or black streaks at exhaust connections to find leaks.
• Apply soapy water on joints and look for bubbles indicating gas leaks.
• Inspect heat shields for warping or rattling from rapid cooling.
• Smell for new exhaust odors in the cabin with the vehicle idling.
• Check O2 sensor wiring for water intrusion or corrosion.
• Use smoke or incense near cold pipes to trace leaks by watching smoke flow.
• Monitor fuel economy and engine performance for unexplained drops.