On the bottme of the radiator should be a small plug either on the bottem left or right.It is the radiator drain. after you have drained all the fluid refill the radiator and continue flushing water tru it it could take up to 3 times of filling it running it and draining it..
ok your going to think i am crazy but trust me on this one i am a ase certified master heavy truck mechanic.drain the coolant from your vehicle and fill with water add 1cup of cascade dish washing detergent to every 2gallons of water. start your vehicle and drive it until it reaches normal operating temp. then let it idle for 15-30 minutes. allow engine to cool off then drain cooling system again. refill with water (no cascade this time) and repeat until water comes out clear again. refill with correct coolant/water mix. also do not use tap water in final mix as it has all kinds of minerals in it use distilled water this cuts down on deposits forming inside your radiator and cooling passages
How do you flush the raditor on a 1992 GMC Sonoma Pickup.
In front of the engine behind the a/c condensor
Drain the blazer radiator. Refill with water. Open the heat on high, start the engine for a few minutes. Drain the system again Repeat this several times to get all of the old coolant out.
Purchase a cooling system flush kit at auto parts comes with fittings adaptors and instructions
Buy a kit at auto parts or Wal-Mart comes with instructions, fittings and adaptors
Remove The Radiator And Have A Radiator Shop Test, And Flush It.
The drain plug is located on the driver side, bottom corner of the radiator, facing the engine. Use a pair of biscripts or plyers to GENTLY remove it. Here is a strange tip that works if you are flushing your radiator: Use Palmolive automatic dishwashing detergent instead of flush cleaner. It will neutralize more rust and leave your radiator cleaner. Just remember to run enough water though it that there are not any bubbles left in the radiator or flush water.
Just flushing the radiator, no but to flush the system, yes.
Cleans antifreeze and dirt out of the radiator
there is a radiator plug on the bottom passenger side of the radiatior, take that out and flush from the radiator cap.