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EFV-8 Club Forum / General Ford Discussion / 1953 239 fuel pump questions, need some help pleas

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53mike
05-21-2017 @ 4:01 PM
Member
Posts: 27
Joined: Nov 2016
          
I want to replace my fuel pump 1953 239
Looking at replacements I see single and dual action. The pump that's in the car now is a dual going by looks. However there is a slight difference from the pictures I see. The pictures of the dual show 2 curved copper lines coming from the bottom that curve upward. What are these? They look like vents to me. The pump in my car looks identicle except it does not have these 2 curved tubes at the bottom as in the pictures. Can someone please explain this to me.
My existing pump just has the fuel inlet and outlet connected, nothing else, do I need a dual action?

MG
05-21-2017 @ 4:23 PM
Senior
Posts: 1255
Joined: Nov 2009
          
If its like the one I'm thinking of, one of the tubes feeds your windshield wiper vacuum motor and the other connects to the vacuum port under the carb...,

53mike
05-21-2017 @ 4:35 PM
Member
Posts: 27
Joined: Nov 2016
          
Pumps looks just like this but no lower tubes. My windshield wiper is plumbed to the base of the carb.

53mike
05-21-2017 @ 4:36 PM
Member
Posts: 27
Joined: Nov 2016
          
IF my windshield wiper is plumbed correctly to the carb do I even need the dual pump?

MG
05-21-2017 @ 4:43 PM
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Posts: 1255
Joined: Nov 2009
          
The purpose of the dual pump as depicted in the picture you posted above, is to act as a vacuum boost for you wiper motor....

This message was edited by MG on 5-21-17 @ 4:44 PM

53mike
05-21-2017 @ 5:01 PM
Member
Posts: 27
Joined: Nov 2016
          
Sounds like the PO eliminated the pump connection and plumbed the ww direct to the lower carb port. I wonder why, maybe because the two tubes are not present. Sounds like I need a schematic of how these vac lines should really be connected.

53mike
05-21-2017 @ 5:02 PM
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Posts: 27
Joined: Nov 2016
          
Sounds like I am safe to order the fuel pump that has the two vac tubes???

ken ct.
05-21-2017 @ 5:25 PM
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Posts: 1513
Joined: Jan 2010
          
A single action pump is all you need and much cheaper as you don't seem to need the vacume section of a dual one. Its up to you. ken ct.

53mike
05-21-2017 @ 5:34 PM
Member
Posts: 27
Joined: Nov 2016
          
What are the benefits of the dual action? I take it it is just a matter of getting the vac lines sorted.

40cpe
05-21-2017 @ 6:42 PM
Member
Posts: 472
Joined: Jan 2010
          
Your engine vacuum goes to the input side of the vacuum section and the wiper hose goes to the output. It is designed to help with your vacuum wiper operation.

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