3000GT VR-4 AWD V6-2972cc 3.0L DOHC MFI Twin Turbo (1998)
4. Reset the vacuum pump to "0" (release vacuum).
5. Using a stop watch, measure how long it takes for the vacuum gauge to reach 51 kPa (15 in. Hg) or more.
Standard value: 1.0 second or less
6. If it takes more than 1.0 second for the gauge to reach 51 kPa (15 in. Hg), the EGR vacuum port may be restricted and should be cleaned.