HELP 7.3 water pump - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 09-15-2013, 02:38 AM Thread Starter
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HELP 7.3 water pump

So I tackled the job of replacing the water pump yesterday and upon getting it all together it leaked like CRAZY I bet it was losing a gallon every 5 minutes. I investigated it further and the thermostat housing looked to contributing so I took it apart and I did have the gasket on the wrong way (under the thermostat not on top) and that helped a little bit but it still continued to leak some. The only other thing I could think of was the lower outlet that you take off the old one needed a O ring but I couldn't find one when taking it apart so I used silicone, and it doesn't look like any coolants coming from their. Any hints on what I could of done would be much appreciated Im pretty depressed about this and need my truck back on the road thank you.
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post #2 of 8 Old 09-15-2013, 05:18 AM
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Did you replace the upper pipe by the tstat? If you re-used it and it was pretty marred up, that might be your issue.


2000 DRW CC 7.3
Exterior: 08 Exterior Clone, 22.5's
Engine Mods: GTP38R WW2, 5 inch exhaust,T500, 6637, TW tunes,DI Up pipes, 6.7 fuel pump fuel system.
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post #3 of 8 Old 09-15-2013, 06:42 AM Thread Starter
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Ya I re used it it didn't look good and leaked a very slight amount before but nothing real noticeable got a billet one on the way but want to be able to drive it till it gets here


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post #4 of 8 Old 09-15-2013, 08:02 AM
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Years ago I bought an AC delco water pump and it leaked till I replaced it with a Ford one. Some of the replacement parts are a little out of spec.
you should've gotten a lower tube, thermostat and water pump gaskets/O rings with the new water pump. Sometimes you have to replace the thermostat neck and lower tube ( some Pumps come with the tube)
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post #5 of 8 Old 09-15-2013, 08:28 AM Thread Starter
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I got everything but the lower tube and thermostats and the o ring for the heater hose tube would rtv on the housing help?


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post #6 of 8 Old 09-15-2013, 08:44 AM
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Quote:
Originally Posted by rosshurlow1 View Post
I got everything but the lower tube and thermostats and the o ring for the heater hose tube would rtv on the housing help?


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RTV won't help or it didn't mine.
I tried a new neck didn't help. Some of the orings are out of spec. to.
Find out which one is leaking and try a factory oring, But with it warm now it'll be worse when it cold. The mexican made pumps are a little different. I measured agianst a factory one. Here's the next pump I will buy if I don't use a Motorcraft one.
Duralast New/Water Pump (DWP-9128) | 2000 Ford F350 Super Duty P/U 2WD 8 Cylinders F 7.3L Turbo Diesel | AutoZone.com

Pressure test your's and see exactly where it's leaking. Lot of people overlook the
Plastic tank I've had two develop invisible cracks and would leak only down to a certian point.
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post #7 of 8 Old 09-15-2013, 12:29 PM
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I went with a dieselsite water pump when I did mine, no issues


2000 DRW CC 7.3
Exterior: 08 Exterior Clone, 22.5's
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Trans Mods: 6.0 trans cooler, JW Valve body,Billet triple disc converter.
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post #8 of 8 Old 09-16-2013, 07:56 AM
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I only use the Airtex pumps, this is what Ford used in them stock. Northern Auto sells them for under $100. It should have come with all the o rings and replacement lower neck which I don't use. The thermostat housing should never be reused, unless it is a emergency and you have no other choice. Only other option is to buy one of the billet housings from dieselsite. But at $15 from Ford I have always just used a new housing instead.

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