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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?
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...?
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.
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.
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.
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!
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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