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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

390 Coolant Leak Issues

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Old Nov 25, 2018 | 04:03 PM
  #1  
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Tbonedog
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390 Coolant Leak Issues

Hey Guys,

I'll try to keep this short. I've got a 1971 F250 camper special with the 390. I recently changed all the hoses for my cooling system, then my radiator started to leak. I got a brand new champion radiator and then my water pump gave up. I put in a new water pump and when I would stop I would get just two little drops from what seemed like the back of the pump. I couldn't figure out where it was coming from, so out of frustration I used Bar's Leaks 1150 (the two part system with the blue on one side and the aluminum on the other). I actually called Bar's and this is what they recommended. Now I am consistently getting drips out of the overflow. Any idea why? the truck has always run cool and never has overheated since I bought it. Any suggestion as to what is going on would be greatly appreciated.

Thanks everyone.
 
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Old Nov 25, 2018 | 05:55 PM
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Kurttb1
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have you installed a new radiator cap
 
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Old Nov 25, 2018 | 06:21 PM
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The radiator came with a new cap. I’m assuming it’s good.
 
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Old Nov 26, 2018 | 02:01 AM
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GaryKip
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From: Lind, WA- Eastern WA
As far as the leak near the back of the water pump- did you replace the short bypass hose, if so, was the metal nipple still in good shape?
 
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