[AT] HELP I'm stumped. truck problems, overheating

[Cecil R Bearden]

Charlie:
I have used a product that looks like aluminum powder for years. It has 
many different names, but just comes in a container the size of a pill 
bottle and looks like aluminum powder.  Also Lisle makes a funnel that 
fits on the radiator inlet, and eliminates the air pockets.  here is the 
link to the one I have.  I got it from amazon.
http://www.amazon.com/Lisle-24680-Spill-Free-Funnel/dp/B00A6AS6LY/ref=sr_1_1?ie=UTF8&qid=1440933478&sr=8-1&keywords=lisle+coolant+funnel

Cecil in OKla




On 8/29/2015 3:35 PM, charlie hill wrote:
> Thanks Mike,
>
> I agree but this engine has 250,000 on it so before
> I tear into it I'll waste a few bucks on block sealant to make sure.
> I sure hope it's not an engine issue because this engine runs perfectly,
> uses no oil and the same oil pressure it had when new.
>
> There are some new innovations in those products and apparently
> they work well now days if you follow the instructions.   I think I
> have the problem solved at least for now but I'd like to hear comments
> from folks familiar with the new block sealant products.  I've been looking
> at that stuff anyway for our 97 Buick that is going to be replaced soon
> with something new but it appears to have coughed up a head gasket and
> I want to get it running so I can at least drive it to the junk yard.
>
> K&N makes two products that are some sort of epoxy and one of them has
> "space age fibers"
> in it.  I'm not inclined toward fibers of any sort, space age or not.
> I know a lot of folks that are in the auto business from used car dealers to
> mechanics to folks that work in parts houses and everyone is telling me to
> use "Blue Devil".   If I find something that works on the Buick
> I'll run a bottle of it through the truck too just for insurance.
> Apparently most
> of these new products require you to drain and flush the system, fill with
> water
> and the stuff, run the engine idle for a while, cut it of and let it sit for
> 24 hours.
> Then drain and refill.  That might be drain and let it sit for 24 hours.
> I'm not sure.
> I’m not real sure about the "blue devil" product because it's a clear liquid
> and I wonder
> if it's not just "water glass" (sodium silicate?).
>
> Charlie
> -----Original Message-----
> From: Mike
> Sent: Saturday, August 29, 2015 3:52 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] HELP I'm stumped. truck problems, overheating
>
> Charlie, I'm not a fan of coolant leak sealers, I prefer, as I'm sure
> you you, to fix the problem correctly. However, when my daughter's jeep
> started leaking coolant, in multiple places,  I used a product call
> K-seal. It's not cheap, about $15 a bottle, but damned if it didn't work
> like a charm.  If it is an air bubble, take your truck and jack it up as
> high as you can on the coolant reservoir side and let it run for a bit.
> The air will work it's way out of the system.
>
> Mike M
>
>
> On 8/29/2015 3:25 PM, charlie hill wrote:
>> Ok guys, my 06 GMC 5.3 liter engine started
>> overheating when first started up.  It would get up
>> to about 220 or 230 degrees.  I could turn the heater
>> on and get NO hot air flow.  Then all of a sudden
>> it would start to cool and the heater would blow hot air.
>> OK easy, bad thermostat.
>>
>> I go and get a new t-stat and put it in.  Same problem except
>> worse.  Now it gets up close to 250 before it starts to cool down.
>> I took the old thermostat in the house and put it in a pot of water on
>> the stove with a cooking thermometer in it.  It opens and closes as it
>> should.
>>
>> Anyone got an idea what is going on?  For those not familiar with
>> the 5.3 GM engines the t-stat is not in the intake like GM motors of
>> old. It's in the front of the water pump housing so it should not be
>> prone to having an airlock at the thermostat.   I see no sign
>> of bubbling in the coolant.  I'm not loosing an appreciable amount of
>> coolant and there is no sign of coolant it the water or out the exhaust.
>> I did however have to add some coolant a few weeks ago which is unusual
>> and I have smelled an odor that smells like a coolant leak.  It's the same
>> odor you smell in the cab when a heater core is leaking.  But I haven't
>> found
>> any sign of a leak anywhere.
>>
>> Right now I'm sitting at home with both of my vehicles not running.  I
>> need
>> answers quick.
>>
>> Thanks
>>
>> Charlie
>>
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