Anything wrong with this radiator flush method?
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From: Ft. Lauderdale, FL, USA
Anything wrong with this radiator flush method? Is there anything wrong with doing this to flush the coolant system:
Open the valve (****) on the radiator and let it all drain out. Then leave the valve open and letting the engine run with a continual water flow going into the radiator from a hose into the radiator fill cap, [b]with the radiator valve (****) open to let the coolant/water keep running out?
Maybe let it idle for 30 minutes like that or until the system is just colorless water flowing through it.
Thanks.
Open the valve (****) on the radiator and let it all drain out. Then leave the valve open and letting the engine run with a continual water flow going into the radiator from a hose into the radiator fill cap, [b]with the radiator valve (****) open to let the coolant/water keep running out?
Maybe let it idle for 30 minutes like that or until the system is just colorless water flowing through it.
Thanks.
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From: Ft. Lauderdale, FL, USA
Originally Posted by spy2520
i was hoping to do mine this way too, i hope its ok.
We might have to let it idle until it opens, then open the (****) and let it drain. Then run the constant fresh water.
BUT....will the rush of cool water hurt the block or heads after they are warm?
the way the 5 dollar kit at walmart does it is u splice into one of the heater hoses, and the exit of the fluid comes out of the radiator fill cap. after 5 mins it should be all clear water coming out. make sure u put the heater inside on full blast. either method should work, but might be slower with the petcock as the exit b/c it is very small i think (never done a flush on a ls1 yet)
Thread Starter
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From: Ft. Lauderdale, FL, USA
Originally Posted by JustAnIlluzion
the way the 5 dollar kit at walmart does it is u splice into one of the heater hoses, and the exit of the fluid comes out of the radiator fill cap. after 5 mins it should be all clear water coming out. make sure u put the heater inside on full blast. either method should work, but might be slower with the petcock as the exit b/c it is very small i think (never done a flush on a ls1 yet)
Or is the flow the other way?
Thread Starter
TECH Veteran
Joined: Dec 2001
Posts: 4,117
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From: Ft. Lauderdale, FL, USA
Originally Posted by JustAnIlluzion
the way the 5 dollar kit at walmart does it is u splice into one of the heater hoses, and the exit of the fluid comes out of the radiator fill cap. after 5 mins it should be all clear water coming out. make sure u put the heater inside on full blast. either method should work, but might be slower with the petcock as the exit b/c it is very small i think (never done a flush on a ls1 yet)
