Washer pump - does it need to be primed?

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Sep 28, 2009 | 07:22 AM

#21

moonsteel

Thread Starter

Holley HP EFI w/TPI

Joined: May 2009

Posts: 553

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From: Kanata ON

Been following it, thos pics you posted are great.

I'd like to rule out an electrical issue before I tear apart the pump itself.

Sep 28, 2009 | 09:26 AM

#22

DZRick

Le Mans Master

Joined: Jun 2005

Posts: 5,447

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From: Syracuse NY

Quote:

Originally Posted by moonsteel

Been following it, thos pics you posted are great.

I'd like to rule out an electrical issue before I tear apart the pump itself.

Just wanted to be sure your answer wasn't in that thread.

Sep 28, 2009 | 10:25 AM

#23

Young69Owner

Burning Brakes

Joined: Oct 2006

Posts: 1,044

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From: Henrico VA

Quote:

Originally Posted by barbs '69 resto

I totally rebuilt my pump. If your pump is like mine there is a doubled edged piston seal that resembles a O ring and 3 check valves most likely they are worn out. The check valve assm. is easy to get but the seal isn't. I wanted to keep my pump original so I made many phone calls and finally located a manufacture that was nice enough to send me a couple of seals. The pump works like new now. By the way there is no diaphragm in the pump. If the pump is working properly it doe's not require priming.

So if I am having this problem after getting the rebuild kit, what else could be the cause? I have a new seal, O-rings, and valves.

Sep 28, 2009 | 02:26 PM

#24

...Roger...

Race Director

Joined: May 2006

Posts: 16,528

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From: Dayton, Ohio

Quote:

Originally Posted by Young69Owner

So if I am having this problem after getting the rebuild kit, what else could be the cause? I have a new seal, O-rings, and valves.

I haven't read this whole thread but do you know that the piston is actually moving ? It must mechanically engage to pump.

Sep 28, 2009 | 02:36 PM

#25

moonsteel

Thread Starter

Holley HP EFI w/TPI

Joined: May 2009

Posts: 553

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From: Kanata ON

How is that accomplished? Electrical signal from the wiper switch?

Sep 28, 2009 | 02:56 PM

#26

...Roger...

Race Director

Joined: May 2006

Posts: 16,528

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From: Dayton, Ohio

Quote:

Originally Posted by moonsteel

How is that accomplished? Electrical signal from the wiper switch?

Yes a ground from the wiper switch. Usually makes a pretty good pop when the drive for the pump is engaged.

Sep 28, 2009 | 03:12 PM

#27

moonsteel

Thread Starter

Holley HP EFI w/TPI

Joined: May 2009

Posts: 553

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From: Kanata ON

Hey Roger,
If I want to test this from inside the engine bay, can I apply 12v and ground to the 2 connectors on the front of the washer pump?

Jerome

Sep 28, 2009 | 03:31 PM

#28

...Roger...

Race Director

Joined: May 2006

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From: Dayton, Ohio

Yes with the wiper already running. Try with the wipers running just grounding the dark blue wire on the pump.

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Sep 28, 2009 | 05:49 PM

#29

moonsteel

Thread Starter

Holley HP EFI w/TPI

Joined: May 2009

Posts: 553

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From: Kanata ON

Quote:

Originally Posted by ...Roger...

Yes with the wiper already running. Try with the wipers running just grounding the dark blue wire on the pump.

Ok, I did that, the same thing happened as when I push the button inside the car.
The lower "arm" tries to reach forward and grab the notched wheel, unsuccessfully.
I took a screw driver and moved the notched wheel once, from there the arm started to grab the notches and start pumping, all the way around.
Water squirted out.

Problem seems to be that it won't grab the first time (works fine for one rotation if I move it one notch with the screwdriver).

Common problem?

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