hey there im wondering how i would go about doing a radiotor service on my car i want to flush it all out and refill with new coolant and water... is there a plug to take out then how do i get waer to run through it?

thanks. marshall

 

the plug for the engine is on the lower part of the center (intermediate) housing ... a 14mm bolt.

 

oh yea its an 83 gs

 

what do i do after that like how do i flush it all through? run a hose through it?

 

well, i usually just open the plug on the engine, then open a hose in the radiator. i'll then start the engine and let it idle while i stand there with the hose and keep running the water through until everything turns crystal clear coming out of the engine; then i turn the engine off and run water through it for about 5 minutes more.

i believe an actual "flush" is more than that, but this what i do every 2 years on my car, when i change the antifreeze.

 

ok thanks a lot, i dont want to pay mr lube 70$ to do when i can just do it so simply myself
thanks again for the help

 

At my shop, we have this machine... You warm the engine up so that the thermostat opens, then you shut if off. You let the pressure out of the cooling system by loosening the radiator cap. Then you remove the upper hose from the radiator, and hook the input hose of the machine to the upper radiator hose, and the output of the machine to the radiator itself. Start the engine and keep it hot so the thermostat stays open. The machine will pump new coolant into the radiator and suck the old coolant out of the engine.

It's really cool.

 

I found the radiator flushes work like crap on older cars. What happens, is that the build up flakes off in chunks. Those chunks don't dissolve, they stay chuncks and plug up my vanes in the radiator. I found, when the system is bad, I have to take out the radiator and have it completely acid bathed and repainted. As for the block, I don't like to run any type of flushing agent through it. Last time I did, my intake started leaking water.

I take out the thermostat and flush the block with a hose. You can get a nice pipe cleaner type of brush and clean alot of the front engine area inside, it's pretty hollow. I found my flange on the thermostat has always severly rusted on all three of my cars. So I take it off, wire brush it and repaint it.

I just did this about 2 months ago and she runs alot better on temp.

 

Remember that after you flush it, DO NOT run regular tap water through the cooling system

Use Coolant/Anti-freeze and distilled water mix along with some rust inhibitor.

Otherwise your coolant passages will look like rusty **** in no time.

 

On my 80 rx7, i disconnect the hose that leads to the air heater drain all the fluid. refill the radiator with an actual radiator flush formula (go down to your local auto store and ask) go for a quick 20min drive then drain again. Refill and leaving the heater hose off run the engine with the tape hose running until clear. Reattach the hose and fill with a quality antifreeze/antiboil. Ask the auto rep which brand is best for aluminium engines, some of the cheaper brands can cause bad reactions between the metals

Happy rotoring

 

i just had mine flushed, apparantly, the rad was not in as good shape as i'd hoped. i started having slow coolant loss. thought it was a loose hose, but it ended up being a nice little hole. so now i have water droplets shooting over my windshield and i go thru 1/2 gallon of coolant every 30 miles.


*note to self* take care of the damn cooling system next time!

 

I used softened and RO water. I though that was enough.