[FlatheadTed]

Mechanical pumps are reliable ,Check your pipe to the tank ,loose connections were pumps and filters have been removed and joints are sucking air etc .I have done two cars lately were the push rod had warn to half of what it should be .We use a push button under the dash for priming electric pumps .Ford pumps which are basically A/C pumps recommend 2,1/2 PSI for a 97 in the book . I did have a pump Fail were the arm chomped out the slot on the diaphragm rod likely due to a non harden steel rod or a dried out diaphragm because the car had been in storage ,Ted