View Single Post
Old 04-15-2021, 10:54 AM   #5
51woodie
Senior Member
 
51woodie's Avatar
 
Join Date: Apr 2018
Location: Chelmsford, ON Canada
Posts: 531
Default Re: Bench test Vacuum on fuel pump

Anthony. Never, ass u me anything. I could be wrong, but applying vacuum to the outlet with the inlet plugged, will show if the diaphragm is leaking if the reading is not steady. Applying vacuum to the inlet, with the outlet open, will tell you if the check valves are working. Of course the best way to see what is happening inside, is to open it up.
Attached Images
File Type: jpg Flathead_Engine_fuelpump1947to48.jpg (40.8 KB, 21 views)
51woodie is offline   Reply With Quote