CAUTION: On high mileage vehicles it is normal to see some exhaust staining around the turbocharger control rod area. This is not a sign of turbocharger failure.
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CONDITION
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POSSIBLE CAUSE
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CORRECTION
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EXCESSIVE EXHAUST NOISE OR LEAKING EXHAUST GASES |
1. Leaks at pipe joints. |
1. Tighten clamps/bolts at leaking joints. |
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2. Rusted or blown out muffler. |
2. Replace muffler. Inspect exhaust system. |
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3. Broken or rusted out exhaust pipe. |
3. Replace exhaust pipe. |
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4. Exhaust pipe leaking at manifold flange. |
4. Tighten/replace flange attaching nuts/bolts. |
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5. Exhaust manifold cracked or broken. |
5. Replace exhaust manifold. |
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6. Leak between exhaust manifold and cylinder head. |
6. Tighten exhaust manifold to cylinder head bolts. Replace gasket if necessary. |
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7. Turbocharger mounting flange cracked. |
7. Remove turbocharger and inspect. (Refer to 9 - ENGINE/MANIFOLDS/EXHAUST MANIFOLD - REMOVAL). |
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8. Restriction in exhaust system. |
8. Remove restriction, if possible. Replace restricted part if necessary. |
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9. EGR pipe(s) leak. |
9. Tighten bolts. Replace gasket. |
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10. EGR assembly leak. |
10. Tighten bolts. Replace gaskets. |
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Drivability Concern - Turbo |
1. Vacuum hose disconnected. |
1. Check connections, replace as necessary. |
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2. Vacuum system leaks. |
2. Inspect for damage. Check for leaks, replace as necessary. |
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3. Boost pressure solenoid filter clogged. |
3. Replace the filter. |