Best way to drain/change the coolant?

[wu11ie]

As above, I've tried searching but I can't find anything.

The coolant, if you can call it that, is the most horrible gunky colour you've ever seen and it REALLY needs changed.

What's the best way to drain it?,

My plan was to run it up to temp and take the return pipe off and feed it into a bucket whilst having a hose in the tank with a constant flow until the return pipe water runs clear, BUT........


would this work, and which pipe is the return pipe?

Thanks in advance

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[MG ZS STE]

do the same thing but with the bleed screw removed. are you bothered about catching it?

[wu11ie]

Originally Posted by MG ZS STE

do the same thing but with the bleed screw removed. are you bothered about catching it?

If I could it would be ideal but I'm on the driveway so I can hose it away if I can't.

Where is the bleed screw?

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[MG ZS STE]

Is it a 180? if so bleed screw on the right hand side of the engine on the big hose coming off the thermostat.

I have flushed through using a hose before but i have heard others prefer to use distilled water.

[wu11ie]

Originally Posted by MG ZS STE

Is it a 180? if so bleed screw on the right hand side of the engine on the big hose coming off the thermostat.

I have flushed through using a hose before but i have heard others prefer to use distilled water.

I wish! Lol, mines a baby 1.6 (110 I think).

I won't be leaving the water in I'll be draining the clean water out and replacing it with fresh coolant, I just want to try and clear out as much of the horrible stuff as possible.

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[MG ZS STE]

Not 100% when it comes to k series but found this

http://forums.mg-rover.org/mg-zr-rov...cedure-486931/

[JOHNDQ]

If you coolant is in that condition to do it properly you will need to remove the thermostat. When you drain the coolant by removing the bottom hose it doesn't drain the coolant out of the engine block or heater so when u refill and run the car up it will all just mix again

[wu11ie]

Originally Posted by JOHNDQ

If you coolant is in that condition to do it properly you will need to remove the thermostat. When you drain the coolant by removing the bottom hose it doesn't drain the coolant out of the engine block or heater so when u refill and run the car up it will all just mix again

That's what I mean, I want to remove the return hose and just run the car till the water is clear or mostly clear to make sure all the rubbish is out before I put in new coolant. If the car is running from cold the thermostat should open as the clean water is running through so it should clean some of it out.

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[JOHNDQ]

Trouble is the thermostat wont open till 88 degrees, I your putting cold water back in then it wont ever open. Maybe try flushing though the system with a hose, run it up, drain it and do that again when drain it again should get more less all of it I guess. Obviously don't put cold water into a hot engine

[wu11ie]

Originally Posted by JOHNDQ

Trouble is the thermostat wont open till 88 degrees, I your putting cold water back in then it wont ever open. Maybe try flushing though the system with a hose, run it up, drain it and do that again when drain it again should get more less all of it I guess. Obviously don't put cold water into a hot engine

Yeah that makes sense, I could just do it over the course of a few days, fill it and empty it till it runs clear.

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