Exhaust System - Gas Engine

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

EXHAUST SYSTEM DIAGNOSIS CHART

CONDITION	POSSIBLE CAUSE	CORRECTION
EXCESSIVE EXHAUST NOISE	1. Leaks at pipe joints.	1. Tighten flanges to specified torque at leaking joints (Refer to EXHAUST SYSTEM - SPECIFICATIONS) .
	2. Burned or blown out muffler.	2. 3.7L/4.7L Replace muffler/tailpipe assembly (Refer to EXHAUST SYSTEM/MUFFLER - REMOVAL) . 5.7L Replace muffler. Check exhaust system.
	3. Burned or rusted-out exhaust pipe.	3. 3.7L/4.7L Replace muffler/tailpipe assembly (Refer to EXHAUST SYSTEM/MUFFLER - REMOVAL) . 5.7L Replace tailpipe resonator assembly (Refer to EXHAUST SYSTEM/TAILPIPE - REMOVAL) .
	4. Exhaust pipe leaking at manifold flange.	4. Tighten connection attaching nuts (Refer to EXHAUST SYSTEM - SPECIFICATIONS) .
	5. Exhaust manifold cracked or broken.	5. Replace exhaust manifold (Refer to ENGINE/MANIFOLDS/EXHAUST MANIFOLD - REMOVAL) .
	6. Leak between exhaust manifold and cylinder head.	6. Tighten exhaust manifold to cylinder head stud nuts or bolts (Refer to ENGINE - SPECIFICATIONS) .
	7. Restriction in muffler or tailpipe.	7. Remove restriction, if possible. Replace muffler or tailpipe, as necessary.
	8. Exhaust system contacting body or chassis.	8. Re-align exhaust system to clear surrounding components.
LEAKING EXHAUST GASES	1. Leaks at pipe joints.	1. Tighten flanges (Refer to EXHAUST SYSTEM - SPECIFICATIONS) .