Wastegate Actuator

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 ).
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 (RX7)

Courtesy of MAZDA MOTORS CORP.