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Purging coolant


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Gents, after reading triathlete's DIY directions I noticed he mentioned something about "purging" and since I will be ready to replace my coolant expansion tank, if the parts arrive this evening, I want to know in detail how to purge the system upon install completion.

I assume purging means removal of air pockets from the system but what the most effective way to achieve this?

Thanks,

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Gents, after reading triathlete's DIY directions I noticed he mentioned something about "purging" and since I will be ready to replace my coolant expansion tank, if the parts arrive this evening, I want to know in detail how to purge the system upon install completion.

I assume purging means removal of air pockets from the system but what the most effective way to achieve this?

Thanks,

gcp - you got mail - the DIY is not mine, just passing it on...

http://basketcasemotorsports.bravehost.com/Tank.htm

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I am pleased to report that the new expansion tank has been mounted in place and so far so good! All's working properly and it only took me 1.5 hours to complete this task. I'd say it's a relatively easy job if you follow the DIY instructions, a far cry from the 4 hours the mechanic wanted to charge me.

Thanks a bunch triathlete for pointing me to the right place and a big thanks to the member that generated the DIY on this task!!

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  • 3 weeks later...
I am pleased to report that the new expansion tank has been mounted in place and so far so good! All's working properly and it only took me 1.5 hours to complete this task. I'd say it's a relatively easy job if you follow the DIY instructions, a far cry from the 4 hours the mechanic wanted to charge me.

Can you describe exactly what was involved in the last step, "purging" of the system?

Thanks,

Kim

2000 Cab

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kim, if you follow the DIY and reuse your old coolant pour it back+the new (you will need very little new coolant) slowly into the expansion tank, crank car and let idle until it warms and thermostat opens, then turn engine off, release pressure valve and pour more coolant to the right level if necessary...again slowly to avoid accumulation of air bubbles. Really there's not much to it at all :clapping:

Hope this helps,

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I just changed the expansion tank out on my 996, it was not too dificult per the procedure, I would like to clerify a few things to make it better.

1. I hand pumped out almost all the fluid out of the coolant tank, using my brake bleeder pump, less mess.

2. I used a Turkey pan to catch a very minimul amount located under the tank area.

3. This method saved me from having to losen the bottom collant drain plug.

4. I was able to reuse almost all the old coolant, The New porsche coolant is now Pink in color, but it mixes with the Green coolant with no issues.

5. Next time I will use a pair of hose clamp pliers, insted of needle nose plires.

6. When disconnecting the fuel lines, use a set of crows feet wrenches.

But I got the job done the above points just make it a little easier.

D Man

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  • 2 weeks later...

Can someone help me I have a problem......

I purchased my 996 c2 about a month ago... the first day I had the car I blew the motor. 3 weeks later I found a used motor and had it put in. When I recieved my car the heat was not working, and the temp light was flashing. I was told there is air bubbles in the lines. They tried many ways to get the bubbles out but it didnt work so they opened up the lines at the front and put coolant in there and the heat works now, but I still have a flashing light, and when I'm on idle, my car will over heat and spill all my coolant out... I have been putting new coolant in every day...

Could my thermostat be bad? Or do I still just have air bubbles in my lines?

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Can someone help me I have a problem......

I purchased my 996 c2 about a month ago... the first day I had the car I blew the motor. 3 weeks later I found a used motor and had it put in. When I recieved my car the heat was not working, and the temp light was flashing. I was told there is air bubbles in the lines. They tried many ways to get the bubbles out but it didnt work so they opened up the lines at the front and put coolant in there and the heat works now, but I still have a flashing light, and when I'm on idle, my car will over heat and spill all my coolant out... I have been putting new coolant in every day...

Could my thermostat be bad? Or do I still just have air bubbles in my lines?

saj, sorry to hear of your travails!! Id' suggest that you go back to the guy that installed the new motor and demand that he does right by you by making your car reliable, period!! You also might want to consider going back to the guy you bought the car from. Did you cause the engine blow, from misuse, or was it a defective car that you bought? Don't try to solve this yourself for you are then assuming all responsibility.

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