stfree
New Member
- Joined
- November 17, 2011
- Messages
- 2
- Reaction score
- 1
- City, State
- Dallas, TX
- Year, Model & Trim Level
- 1990 Ranger 4X4
Hello all,
I'm trying to determine what to expect in applying a vacuum to a suspect vacuum modulator on a A4LD '90 Ranger. Should I be able to pump a specific number of inches of vac and expect it to hold? What I see now is that I can rapidly pump down to about 10" of vac but it bleeds off within 3-4 seconds. I'm connected directly to the device straight off the pump with a known good hose.
Thanks
I'm trying to determine what to expect in applying a vacuum to a suspect vacuum modulator on a A4LD '90 Ranger. Should I be able to pump a specific number of inches of vac and expect it to hold? What I see now is that I can rapidly pump down to about 10" of vac but it bleeds off within 3-4 seconds. I'm connected directly to the device straight off the pump with a known good hose.
Thanks