Flushing the cooling system.
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From: USA. Northern Virginia
Flushing the cooling system.
I'll be flushing my own cooling system on my 94 on Friday afteernoon...
I have the Dexcool and Red Line's water wetter ready and I'll be flushing lots of water through the system :thumbs: any other tips I need to know for this project? I'll also be vacuuming out the radiator area.
Thanks Larry :steering:
[Modified by 69mako, 3:29 PM 6/19/2003]
I have the Dexcool and Red Line's water wetter ready and I'll be flushing lots of water through the system :thumbs: any other tips I need to know for this project? I'll also be vacuuming out the radiator area.
Thanks Larry :steering:
[Modified by 69mako, 3:29 PM 6/19/2003]
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Re: Flushing the cooling system. (69mako)
They say you have to remove both knock sensors to get all the coolant around the water galleys in the block. But, I found a low-tech, lazy man's way that works just as well with less hassle.
With the radiator opened up to warm (operating) temps. open the petkock. Then, using a shop vac hose attached on the BLOWER side, take the hose and place it over the radiator tank and let the air BLOW the water out of the system.
Once it's all out, close the petkok and refill with water. Open the petkock and repeat! Works great and blows all lthe water out really well! Just be sure and bleed the system by opening the bleeder screws located near the water inlet hose. :thumbs:
With the radiator opened up to warm (operating) temps. open the petkock. Then, using a shop vac hose attached on the BLOWER side, take the hose and place it over the radiator tank and let the air BLOW the water out of the system.
Once it's all out, close the petkok and refill with water. Open the petkock and repeat! Works great and blows all lthe water out really well! Just be sure and bleed the system by opening the bleeder screws located near the water inlet hose. :thumbs:
Thread Starter
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Re: Flushing the cooling system. (onedef92)
Thanks...I was thinking off running about 10 gallons of water through the whole system :yesnod:
Your's is a great idea!
Your's is a great idea!
Melting Slicks
Joined: May 2001
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From: San Diego CA
Re: Flushing the cooling system. (69mako)
Why do you want to use DEXCOOL? I've heard no particular benefits about it and I've heard a few horror stories.
I'd add pull radiator and wash it off really well. Vacuuming will probably do more harm with all the bent fins. The fins have the strength of heavy duty alumimum foil.
I'd add pull radiator and wash it off really well. Vacuuming will probably do more harm with all the bent fins. The fins have the strength of heavy duty alumimum foil.
Thread Starter
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Re: Flushing the cooling system. (Ericthewolf)
Why would you use dexcool in a 94? That is crazy..
Thats why I use Dexcool in the blue beast :yesnod: :yesnod:
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Re: Flushing the cooling system. (69mako)
Dexcool works fine in my lt4, I think it's bad reputation (on forums) is sort of a combination of "urban legend" and wanting to blame a new product for problems with fans, radiators, thermostats, not bleeding the air out etc.
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Re: Flushing the cooling system. (69mako)
Ever replaced the stat? I figure that as a maint item ever though it's not listed as such by gm. I figure 50 - 60 k miles is enough for one of those.
Thread Starter
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Re: Flushing the cooling system. (69mako)
After reading the "C4" tech section...I'm going to pull my rad first :thumbs: Then flush it and see if that brings the temps down some :thumbs: :yesnod:
