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The gasoline engine exhaust system consists of engine exhaust manifolds, exhaust pipes , catalytic converter(s) (1), The exhaust system must be properly aligned to prevent stress, leakage and body contact. Minimum clearance OPERATION The exhaust system channels exhaust gases from the engine and away from the vehicle. DIAGNOSIS AND TESTING EXHAUST SYSTEM EXHAUST SYSTEM DIAGNOSIS CHART CONDITION POSSIBLE CAUSE CORRECTION EXCESSIVE EXHAUST NOISE 1. Leaks at pipe joints. 1. Tighten clamps to specified 2. Burned or blown out muffler. 2. Replace muffler assembly (Refer 3. Burned or rusted-out exhaust 3. Replace exhaust pipe (Refer to 4. Exhaust pipe leaking at manifold 4. Tighten connection attaching nuts 5. Exhaust manifold cracked or 5. Replace exhaust manifold (Refer 6. Leak between exhaust manifold 6. Tighten exhaust manifold to 7. Restriction in muffler or tailpipe. 7. Remove restriction, if possible. 8. Exhaust system contacting body 8. Re-align exhaust system to clear LEAKING EXHAUST GASES 1. Leaks at pipe joints. 1. Tighten/replace clamps at leaking 11 - 2 EXHAUST SYSTEM ND |