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Old Mar 25, 2013 | 09:26 PM
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Default motor flush out

Hi all I am going to try to install a new Radiator when I pull out the old leaking, cloged up Rad. I would like to flush out the motor,so I have a top hose and a bottom hose. the old Rad. is out. can I put garden hose in the top hose and start the engeine.and catch the crud with the bottom hose, that use to be hooked up to the bottom of old Rad. it makes since to me????? any help would be great. thanks to alll Rich outttt. PS the crud that is in the motor I want to keep it out of the new RAD.
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Old Mar 26, 2013 | 02:09 AM
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St. Jude Donor '22
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leave the old rad in.
buy a back flush kit at Walmart. install
put 2 cans preston flush.
run and then use back flush tee.

THEN remove old rad.
make sure heater is on.
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Old Mar 26, 2013 | 05:48 AM
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You can even go further than that. Pull the block drain plugs and the water pump and blast the bottom of the water jacket with a garfen hose. Should probably replace the pump anyway, along with t-stat, cap and hoses. You can easily blast out the heater core, remove both hoses and flush both ways.
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Old Mar 26, 2013 | 10:03 AM
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Default Block Drain

Originally Posted by SH-60B
You can even go further than that. Pull the block drain plugs and the water pump and blast the bottom of the water jacket with a garfen hose. Should probably replace the pump anyway, along with t-stat, cap and hoses. You can easily blast out the heater core, remove both hoses and flush both ways.
Hello thanks for your help, my repair manual does not tell me were the block drain is on a 1974 coupe, I did not want to send all the old crud in the old rad. back into the motor with chemicals???? Rich outttt.
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Old Mar 26, 2013 | 11:45 AM
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There's a drainplug on both sides of the block, about in the middle, right above the oil pan
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