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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Heater smoking

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Old Jan 10, 2013 | 10:34 AM
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Heater smoking

I had a small coolant leak from the heater core in my 63 f100. I adding all new coolant and also added some of the sealant additive to it that says it fixes leaky heater cores. I ran it for the first time this morning and ran the heater on high for about 20 min when truck was warm while driving. just a few drops on floorboard but I figured it has to work its way through the system to seal it. I turned heater off caue it was getting hot in the cab and about 15 min after turned it back on and got white smoke in my cab. Scared the hell out of me. Whats going on here fellas?
 
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Old Jan 10, 2013 | 10:37 AM
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Did it smell? like burning or odorless? How much smoke? just a puff or billowing?
 
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Old Jan 10, 2013 | 10:42 AM
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smelled a bit but not too much like burning smell. Not total billowing but not just a puff either. I immediately had to roll down the window. Is it wishfull thinking to assume it the additive I put in the coolant at work...?
 
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Old Jan 10, 2013 | 12:46 PM
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How about now? Does the blower motor still work? If not it could have fried. If it does still work is it making any unusual noises or creating any smoke?

If I knew my heater core was leaking I'd probably replace the core rather than use one of those additives that is supposed to plug leaks. Sounds like trouble waiting to happen. If it blows out bad enough you can end up with sticky, smelly radiator fluid all over the inside of the cab. Personally, I wouldn't want to deal with the mess, but that's just me.
 
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Old Jan 10, 2013 | 04:55 PM
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I suspect what you saw was steam not smoke. And yes it will stink.

The heater core should be less than $25.00 and a easy replacement. I wouldn't put that stop leak crap in my truck.


John
 
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Old Jan 10, 2013 | 09:24 PM
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If it is leaking it goes into the box and then the cab floor, kick panel etc.. RUST! Fix or replace the core. I'll post a pict of why Sat.
 
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Old Jan 10, 2013 | 10:02 PM
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How big/detailed/time consuming is replacing the heater core? Mine just started dripping. I have a new one here, just want to have an idea of how big the job is.
 
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Old Jan 11, 2013 | 04:18 AM
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Get a new heater core and flush that garbage out of your system. Its not that big a deal to replace the core in these old trucks.
 
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Old Jan 11, 2013 | 05:44 AM
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Originally Posted by GJ1963
How big/detailed/time consuming is replacing the heater core? Mine just started dripping. I have a new one here, just want to have an idea of how big the job is.
I'd say an hour or less in time. Remove the hoses at the firewall, then three nuts below, and I believe the box drops inside. Make the swap and reverse the action.



John
 
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Old Jan 11, 2013 | 08:54 PM
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All true. I would add that you should consider buying a new heater gasket set. These are available for broncos and work on our trucks. After that it's basically a remove, clean, paint and replace. You will be glad you did this and it is not expensive. IMHO!
 
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Old Jan 12, 2013 | 01:19 AM
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William, I just saw what you posted - from Atlanta to St. George, Utah. Man,,, that is a big change.!
 
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Old Jan 22, 2013 | 09:58 AM
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I replaced my heater core last night. Thanks for the suggestions, it really was that easy. I made my own seals as I had plenty of foam and weather srtipping around. Two hour job to pull everything, clean, assemble and isntall with new hoses. Oh one thing to mention for someone else doing this. Oil the studs firstthat go through the firewall. I was not paying enough attention and missed one. Had just enough corrosion to bind and break the stud free from the housing so that it spun. Got it out without much hassle, but had to tack weld it back to keep it from spinning.
 
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