Vacuum Leak Archives - Tomorrows Technician
Toyota/Lexus: Critical Wear Areas, Vacuum Test Locations

You should keep a record of vacuum results for each valve body at each tested circuit/port location.

Nissan Frontier: Finding Failures, Faults

Nissan uses two accelerator pedal position (APP) sensors to transmit a throttle position command.

Use A Smoke Machine To Locate A Vacuum Leak

Several technicians struggle trying to find a vacuum leak. Try using a smoke machine to find a vacuum leak.