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Test 4: Sonata

WARNING: This page does not describe the selected car, but rather 52 other vehicles, including the 2020 Hyundai Venue, 2020 Hyundai Sonata, 2020 Hyundai Ioniq, 2020 Hyundai Elantra, and 2020 Hyundai Accent. However, it is still accessible from the selected car via links, so may be relevant.

Remove EGR valve and inspect for carbon deposits. Ensure valve is not sticking. Apply vacuum to valve and check for leaking diaphragm. Check air flow through valve with vacuum applied.

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