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1.Remove the exhaust gas recirculation valve and inspect for sticking, carbon deposits,
etc. If found, clean with a suitable solvent so that the valve seats correctly.
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2.Connect a hand vacuum pump to the exhaust gas recirculation valve.
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3.Apply 67 kPa of vacuum, and check that the vacuum is maintained.
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4.Apply a vacuum and check the passage of air by blowing through one side of the exhaust
gas recirculation passage.
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Vacuum
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Passage of air
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5.6 kPa or less
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Air is not blown out
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29 kPa or more
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Air is blown out
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5.Replace the gasket, and tighten to the specified torque.
Tightening torque: 23 ± 6 N·m
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