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

HELP NEEDED BAD!!! Massive Coolant Leak!!!

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Old Mar 29, 2003 | 06:47 PM
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Unhappy HELP NEEDED BAD!!! Massive Coolant Leak!!!

I bought a 1986 F-150 with a <a href="http://www.motorhaven.com/">302 </a>EFI engine. The fuel pumps were not working and it turned out to be the hot wire that attaches to the selonoid. The radiator appeared empty. When I started the truck(because I was more concerned with getting it started first) it started leaking cooland off the back side of the motor and onto the tranny. When I fill the radiator up with the motor OFF the coolant is running onto the ground from somewhere behind the motor or plenum. I can't find it and it is leaking bad. Is there a coolant system diagram somewhere online? What could cause coolant to run on the ground from back there without the motor running? Please Please Please anybody.
 
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Old Mar 29, 2003 | 07:40 PM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

Are you sure it is coming from the top of the motor and not out of the bellhousing? I would recommend getting back there with a flashlight and watching while someone pours coolant into the radiator.
 
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Old Mar 29, 2003 | 10:19 PM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

Originally posted by Talman26
What could cause coolant to run on the ground from back there without the motor running? Please Please Please anybody.
Gravity.
 
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Old Mar 30, 2003 | 07:19 AM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

Hey Ford Six

Where would the coolant be coming from if it was dripping out of the bell housing? My <a href="http://www.motorhaven.com/">302 </a>has a slight rear main seal or transmission seal leaking but also a small amount of coolant on the floor ocasionally.

JJH
 
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Old Mar 30, 2003 | 12:24 PM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

You may have a leaking expansion plug on your block. It's a pain to replace but a mechanic should be able to advise if that is what it is.
 
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Old Mar 30, 2003 | 05:05 PM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

Well I pulled the plenum off and found a hole in the intake manifold near the farthest back injector on the passenger side, the hole is about the size of a pencil eraser. Any chance of a shop patching the hole? What would be a good price for a used intake manifold?

Thanks
 
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Old Mar 30, 2003 | 10:23 PM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

Unlike cast iron, aluminum can be welded very easily with a shop set-up to do it. But check the junkyards first.

I went to www.car-part.com and plugged in your truck in the state of New York. I selected intake manifold, 5.0 lower, and got prices from $30.00 to approx $120.00.
 

Last edited by Franklin2; Mar 30, 2003 at 10:28 PM.
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Old Mar 31, 2003 | 01:11 AM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

JB Weld or JB Kwik are also options.
 
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Old Mar 31, 2003 | 07:05 AM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

Thanks, if I could get one for that cheap I might as well replace it so it doesn't leak again. Car-Part.com rules! How do I know what tranny I have in my truck. It says Metric Automatic Overdrive on the pan?
 
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Old Mar 31, 2003 | 07:37 AM
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HELP NEEDED BAD!!! Massive Coolant Leak!!!

Look on the sticker in the door jamb and find the TRANS code (a single letter). E is the E4OD; K is the C-6; T is the AOD; U is the 4R70W (electronic version of the AOD).
 
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