VACUUM LINE INSPECTION

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VACUUM LINE INSPECTION

B3E041143640W02

1. Remove the vacuum hose. (See VACUUM HOSE REMOVAL/INSTALLATION.)

2. Verify that air can be blown from the power brake unit side of the vacuum hose towards the intake manifold side, and that air cannot be blown in the opposite direction.

  • If there is any malfunction of the inner check valve, replace it together with the vacuum hose as a single unit.