Regal V6-3.8L VIN K (1997)
Vacuum Modulator: Testing and Inspection
Vacuum Diaphragm Check Procedure
Perform the following steps to inspect the vacuum diaphragm:
1. Turn the modulator so that the vacuum connector faces down.
2. Replace the modulator if any of the following liquid drains out:
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If transaxle fluid drains out.
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If water condensate drains out.
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If gasoline drains out.