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Wastegate Actuator

WARNING: This page is about a different car, the 1995 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure engine is cool. Remove hose connected to actuator. Connect air pressure source to pressure gauge. See Fig 1 . Apply air pressure to actuator.
    CAUTION: DO NOT  allow pressure to exceed 14 psi (1.0 kg/cm2 ).
  2. Apply 10-14 psi (0.7-1.0 kg/cm2 ) of compressed air. Ensure actuator rod moves when air pressure is applied. If actuator rod does not move, replace wastegate actuator.
Fig 1: Testing Wastegate Actuator
G93A80325Courtesy of MAZDA MOTORS CORP.
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