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2. Inspect the threads on the retaining bolts. 3. Inspect the intake manifold for cracks. 4. Clean the internal ports of all debris. 5. Replace the intake manifold if necessary. EXHAUST MANIFOLD CLEANING AND INSPECTION Fig. 469: Inspecting Exhaust Manifold 1. Clean the exhaust manifold. 2. Inspect the exhaust manifold for cracks or damage. 3. Inspect the exhaust manifold threads and studs (if necessary).
2006 Hummer H3 2006 ENGINE Engine Mechanical - 3.5L (L52) - H3
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