Grand Cherokee 4WD V8-4.7L (2003)
Vacuum Check Valve And Seal
4. Apply 51 - 67 kPa (15 - 20 inch) vacuum at large end of check valve.
5. Vacuum should hold steady. If gauge on pump indicates vacuum loss the check valve and seal should be replaced.
Vacuum Check Valve And Seal
4. Apply 51 - 67 kPa (15 - 20 inch) vacuum at large end of check valve.
5. Vacuum should hold steady. If gauge on pump indicates vacuum loss the check valve and seal should be replaced.