Series 3 Draining Coolant

Jamie Tyldesley · May 24, 2019

Hi all,

I'm sure this is the world's easiest job, but I cannot for the life of me find the tap to drain the coolant on the cylinder block of my 2.25 diesel Series III. Please could someone give me a tip on where to look.

Thanks, Jamie

Dippypud · May 24, 2019

Jamie Tyldesley said:
Hi all,

I'm sure this is the world's easiest job, but I cannot for the life of me find the tap to drain the coolant on the cylinder block of my 2.25 diesel Series III. Please could someone give me a tip on where to look.

Thanks, Jamie

It hides under the exhaust... It is on that side of the engine and is either a wing nut style tap or a solid brass plug ...

Dippypud · May 24, 2019

If you're flushing the cooling system, remember the heater matrix ...

Jamie Tyldesley · May 24, 2019

Dippypud said:
If you're flushing the cooling system, remember the heater matrix ...

All closed

Jamie Tyldesley · May 24, 2019

This one? (Just want to check before opening it incase it's the wrong one)

Thanks

Dippypud · May 24, 2019

Jamie Tyldesley said:
This one? (Just want to check before opening it incase it's the wrong one)

Thanks

That looks like the bugger, 13mm, IIRC ....

Jamie Tyldesley · May 24, 2019

Dippypud said:
That looks like the bugger, 13mm, IIRC ....

Thanks so much

rob1miles · May 24, 2019

Do you really need to touch that? Its one of those things that can go very wrong for a small gain. I tend to keep well away from things screwed into old iron blocks. A freind of mine once craked a block fitting an oil pressure switch.

Colthebrummie · May 25, 2019

rob1miles said:
Do you really need to touch that? Its one of those things that can go very wrong for a small gain. I tend to keep well away from things screwed into old iron blocks. A freind of mine once craked a block fitting an oil pressure switch.

I agree, don't mess about with it. If you need to flush the coolant, remove a hose, drain, refill with water, run engine for a couple of minutes, drain, repeat until water runs clear, refill with correct mix of coolant.

Col

Blackburn · May 25, 2019

That looks like the remnants of a tap it is brass should come out ok.
You will need a new one or a brass plug the right size.

Extreedoc · May 25, 2019

It's one of those taps with the 'wing-nut' part broken off, they always used to break like that, useless damned things. You might be able to remove the whole as Blackburn has said: it is brass and most likely will turn out but be careful and don't force it. You might be able to source a brass plug at a hydraulics suppliers.
There is much to be said for leaving well alone and flushing the block with a hose.

rob1miles · May 25, 2019

That's a job to do when the engine is out for a rebuild, then you can drill it and re-tap the thread once its broken off (as they do).

Bobsticle · May 26, 2019

Never taken mine out. I just chuck a garden hose down the thermostat for half an hour.

It’ll be full of crap again in 12 months anyway

Series 3 Draining Coolant

Jamie Tyldesley

Member

Dippypud

Never Knowingly Understood

Dippypud

Never Knowingly Understood

Jamie Tyldesley

Member

Jamie Tyldesley

Member

Attachments

Dippypud

Never Knowingly Understood

Jamie Tyldesley

Member

rob1miles

Well-Known Member

Colthebrummie

Well-Known Member

Blackburn

Well-Known Member

Extreedoc

Well-Known Member

rob1miles

Well-Known Member

Bobsticle

De Villes Advocaat

Similar threads