Checking for vacuum loss (unloaded condition)
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
- Start the engine.
- Stop the engine when the vacuum gauge indicates 66.7 kPa {500 mmHg, 19.7 inHg} .
- Observe the vacuum gauge for 15 seconds
.
- If the gauge indicates 63.4-66.6 kPa {475-500 mmHg, 18.8-19.6 inHg} , the unit is operating.