Leak check
1. Check exhaust system for obvious signs of leakage such as carbon tracks and marks at pipe joints.
- a. Check for loose or missing fasteners. Tighten or replace as necessary.
- b. Check for cracked pipe clamps or brackets. Replace or repair as necessary.
- c. Check for loose or cracked exhaust shields. Replace or repair as necessary.
2. Check exhaust system for audible signs of leakage.
- a. Start engine.
- b. Cover end of muffler with clean, dry shop towel.
- c. Listen for audible signs of exhaust leakage.
3. Correct any detected leaks.
- a. See Exhaust system. Disassemble exhaust system.
- b. Clean all mating surfaces.
- c. Repair or replace damaged components.
- d. Assemble exhaust system.
Note: If leak continues, disassemble and apply Permatex Ultra Copper or LOCTITE 5920 FLANGE SEALANT or equivalent oxygen sensor/catalyst-safe alternative to mating surfaces.