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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Faulty Water Pump(?)

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Old Jun 20, 2024 | 07:36 PM
  #1  
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Unhappy Faulty Water Pump(?)

I have an 82 F-150 with a Straight Six 300. (Non-Air-Conditioned)

Coolant is leaking and dripping down the lower radiator hose and then onto the ground.

I replaced the hose with new clamps, and it is still leaking.

There is no grinding noise, and the water pump is pumping coolant. It seems to be leaking from the piece of pipe with the flange on it itself.

Has anyone experienced this?/Any recommendations?
 
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Old Jun 21, 2024 | 05:31 AM
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Welcome to FTE

Can you get a picture of this pipe with a flange?
Is there anything on this pipe like a hose and if so where dose it go?
Only thing with a pipe I can think of is a heater hose nipple.
I know 1 is on the Tstat housing think the other is in the water pump?
They have been known to rust and leak.

Water pumps do have a weep hole at the bottom and if the seal goes bad will start to leak but you can see the hole most of the time.
Motor off if you grab the fan blade and try and move it up and down dose it move?
If so bad water pump. I have see the fan move a lot and not leak and also seen them not move and leak so???
Dave ----
 
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Old Jun 21, 2024 | 09:19 AM
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From the Book of Troubleshooting, Chapter 3, Verse 7:

Get thee a cooling system pressure tester. Thou shalt connect the tester to the radiator neck. Thou shalt pump up the tester to 13 PSI. Thou shalt not pump up the pressure to 12 PSI, except when proceeding straight through to 13 PSI. 14 is right out.

Thou shalt watch the following video:



Verily I say, thou shalt keep all fingers attached, working safely with the engine off. Thou shalt rejoice when thou dost find the exact source of the leak.
 
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Old Jun 21, 2024 | 09:22 AM
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Originally Posted by kr98664
14 is right out.
What you did there, Sir Karl, I see it.
 
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Old Jun 21, 2024 | 10:09 AM
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Here's my leak from a few years back.





 
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Old Jun 21, 2024 | 01:55 PM
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I think the "pipe with a flange" I was referring to was in fact the weep hole.

The fan blade will move but not easily.
 
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Old Jun 21, 2024 | 02:06 PM
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Oh, we all know the weep hole. Looks like you'll be replacing the pump.

I was told by one of the trusted members here to use this to seal the gaskets.

 
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Old Jun 21, 2024 | 02:09 PM
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Looks that way. Turns out a new one is cheaper than I thought!

Thanks guys!
 
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Old Jun 21, 2024 | 02:13 PM
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You may find that with a lot of items for these "old" trucks.
 
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Old Jun 21, 2024 | 02:16 PM
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Man, I dunno @Max Capacity , I would use that sealer on one side of the valve cover gaskets but regular RTV should be just fine for water pump gaskets.
 
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Old Jun 21, 2024 | 02:21 PM
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Originally Posted by Bronco638
Man, I dunno @Max Capacity , I would use that sealer on one side of the valve cover gaskets but regular RTV should be just fine for water pump gaskets.
I have no leaks, so I'm happy. Only thing I wish I had done was to paint the new pump before installing it.
 
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Old Jun 21, 2024 | 02:29 PM
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Originally Posted by Max Capacity
I have no leaks, so I'm happy. Only thing I wish I had done was to paint the new pump before installing it.
OK!

Too late to paint it now?
 
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Old Jun 21, 2024 | 02:51 PM
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Originally Posted by Bronco638
OK!

Too late to paint it now?
Yeah, I spray it with Fluid Film now and then. I guess it helps some. Who knows... It's not like mine is a show truck LOL
 
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Old Jun 21, 2024 | 03:09 PM
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I use that same sealer to hold gaskets like the water pump, oil pan and side cover to each item. I also put a little grease on the other side of the gasket.
This way if I have to remove them later the gasket sticks to the part removed and is easy to clean the old gasket off the part on the bench and little clean up on the motor side.

I also used that same sealer on the freeze out (casting plugs) plugs.
Dave ----
 
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