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SIMPLE COOLING QUESTION!
#1
Hey guys!!! Everything Ok??

Well.. the thing here is the following... I´m in proccess to replace my (still factory original Sad) water pump and as i´m on the cooling system i´m adding a thermostat, replacing the radiator hoses (the lower one is still original too... i´m amazed!!) and also, i´ve cleaned the hole water circuit with some 10 mitute circulation product before i took everything off...

As i´m on that i wanted to replace ALL the cooling liquid from the engine and i just couldn´t find any engine drain plug on the block...

Í managed to "clean" the better i could inside the circuit by conecting an external water sourse directly into the pump and facing the upper hose to the floor with my car in Idle for some minutes but i´m still wondering if there´s any way to just empty the hole water that is still in the engine and replacing with a good quality coolant to do this the best i can...

Well.. As you know, my car is a little 250 I6 so.. if yu guys know about a drain, great!... but where is it?? Tongue

If the engine doesn´t have one, which is the best way to clean the inside from what i´m now?

THANKS!!

chili banana



Damián Cool

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#2
As far as I know there is no Engine drain. The only way to go about it is to flush the system as you have done.
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#3
Tnfastbk;31323 Wrote:As far as I know there is no Engine drain. The only way to go about it is to flush the system as you have done.

Aha... Lazy designers!!... it could be much more easy to put a little drain!! I´m just concerned because i notice there is dirt in the circuit and flushing doesn´t help too much with some maybe a little heavy particles of rust that are into there... Well... it is what is it!!...

Thank´s Roy!!... how´s your car man!??



Damián Cool

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#4
Slow process but getting closer
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#5
I've taken a hose to my top radiator hose and just blown water through the system with the lower hose disconnected and the thermostat removed for like 20 minutes to get all the junk out. when you fill it back up with coolant if you want to make sure you get rid of most of the water, run the engine for a few days with the coolant extra water mix, then drain the rad and refill it with 50/50 coolant water and you should be good to go.

the system will equalize itself over the next few days you drive it water will boil off a little. eventually the overflow will stop spitting out extra coolant.
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#6
72HCODE;31335 Wrote:I've taken a hose to my top radiator hose and just blown water through the system with the lower hose disconnected and the thermostat removed for like 20 minutes to get all the junk out. when you fill it back up with coolant if you want to make sure you get rid of most of the water, run the engine for a few days with the coolant extra water mix, then drain the rad and refill it with 50/50 coolant water and you should be good to go.

the system will equalize itself over the next few days you drive it water will boil off a little. eventually the overflow will stop spitting out extra coolant.

Great tip!... i already did the air hose stuff into de radiator and also, into de water pump, engine hole when i removed the old one...

I also can estimate how much water is still in there because i know what is the capacity of the cooling system so... if it is still too much i´ll empty it again in a while just to keep purifying my coolant liquid...

Thanks for the tip!



Damián Cool

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#7
Hi Damian,
When I do a flush, my final step before filling with antifreeze is to fully open the radiator drain plug and then remove the radiator cap and put the garden hose in it making sure the water from the garden hose is at the same speed as the drain plug. Then I idle the engine again for a few minutes till the water from the drain is clear. Button it up and it's good to go!
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#8
All of the above sounds like good advice. Back in the day Prestone use to sell a flushing kit which was a plastic splice piece with a garden hose connector on it. It splices into the heater hose and you just hooked the hose to it and let it flush the system. Not sure if they still make them. I think mine is buried somewhere in one of my toolboxes! I like the idea of removing the thermostat, bolt the housing back on and flush it that way.



Mike AKA Ole Pony & Rare Pony

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1973 Mustang Convert - Bought in 1974 - Still have it!
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#9
An update guys!!... Yesterday night i spent a few hours making the best i could to flush everything again.. (i have done that after cleaning the hole circuit with a 10 minute running liquid i bought in the gas station)...

What i did was stick a garden hose with an improvised rubber seal into the inner waterpump hose and i just used an old radiator hose to connect into the thermostar pipe (without the actual thermostat on) flush the circuit to the floor (didn´t want to wet my engine bayTongue)

Then i started the car to make the waterpump work and move the hole cooling water... Not much happened actually... the water that came off the thermostat pipe was as clear as it could get almost from the beginning...

So i decided to stop the engine, close the water sourse and instead of water, flush some compressed air into the waterpump... just to try to move the remanent of water from the block... I started the engine again for a few seconds with no water sourse but air into the waterpump... By doing that, i took some more clear water through the thermostat pipe and i decided to call it cleaned...

I putted everything back together and refill the radiator with new 25% concentrate coolant in 75% water (following the bottle recomendations of course). I managed to add 10 litres of coolant into the system... I believe Ford says my mustang should have 12 or 13 litres in the cooling system so if my memory is right, it is not so bad...

I will run the car for some days as is and then, i will flush this colant and add new again just to be sure i have the best i can into there...

Thanks guys!! Smile



Damián Cool

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#10
goodjob bur imo a second round from what you describes is NOT required, but if it make you feel better go ahead. Dont make it harder than it has to be.
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