| Table 1: | No Vacuum |
| Table 2: | Low Vacuum or Fluctuating Vacuum Gauge |
Problem | Action |
|---|---|
|
Notice: Test should be taken with the engine running. Vacuum should reach --70 kPa (21 in Hg) minimum at sea level within 30 seconds. Elevation (feet/meters above sea level) will affect the vacuum reading you will see on the vacuum gauge. | |
Broken drive belt | Replace the drive belt. |
Defective belt tensioner (if equipped) | Replace the belt tensioner. |
Pulley for the vacuum pump is loose | Replace the pulley. |
Broken vacuum line | Locate and repair the break in the vacuum line. |
Problem | Action |
|---|---|
|
Notice: Test should be taken with the engine running. Vacuum should reach --70 kPa (21 in Hg) minimum at sea level within 30 seconds. Elevation (feet/meters above sea level) will affect the vacuum reading you will see on the vacuum gauge. | |
Wrong drive belt | Replace the drive belt. |
Defective belt tensioner (if equipped) | Replace the defective belt tensioner (if equipped). |
Pulley loose on vacuum pump shaft | Replace the vacuum pump pulley. |
Defective vacuum pump | Replace the vacuum pump. Refer to Vacuum Pump Replacement . |
Defective accessories | Locate and repair or replace the defective accessory(s). |
