1957 fuel pump pressure side into the intake purpose?

B
Last seen
Joined
Feb 11, 2020
Thunderbird Year
1956
I know the purpose of the vacuum side of the dual action fuel pump is for the wipers. What is the purpose of the pressure side of the fuel pump into the intake?
 

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augment the vacuum to the wiper.
 
I know the purpose of the vacuum side of the dual action fuel pump is for the wipers. What is the purpose of the pressure side of the fuel pump into the intake?
Vacuum Wipers 1.png
wiper1.jpg wiper2.jpg
Vacuum Wipers 2.jpgwiper3.jpg wiper4.jpgVacuum Wipers 3.jpgwiper5.jpg

doug7740
1955 Thunderbird Blue
 
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