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Author Topic: Flushing the coolant system  (Read 8493 times)
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richgoldfinch
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« on: 01 February, 2020, 08:09:19 PM »

All,

My car has been standing for a few years and I want to flush the system. Never having done it before, how do I open the  drain cock?  I don't want to do any damage and it's not obvious from looking at it- at least not from my simple brain...

Thanks

Rich


* IMG_3110.jpg (3291.2 KB, 4032x3024 - viewed 416 times.)
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Scott
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« Reply #1 on: 04 February, 2020, 08:57:49 AM »

There should be a hex nut that unscrews. Here's what the complete part should like: https://www.pieces-fulvia.com/coolant-liquid-drain-connection.htm

Almost looks like yours has been sheared off in the past ... although that would take some doing I would think ...  but perhaps something happened because those pipes look original but the jubilee clips are much newer.

If you don't want to get a replacement drain connector then removing the clips/pipes seems your best option for draining the system.
« Last Edit: 04 February, 2020, 09:04:06 AM by Scott » Logged
simonandjuliet
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« Reply #2 on: 04 February, 2020, 12:48:26 PM »

Hi, early cars have a drain plug operated from above by a "T" piece. I presume the photo is from below.

Has the T piece broken off ?

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lancialulu
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« Reply #3 on: 04 February, 2020, 02:33:02 PM »

Hi, early cars have a drain plug operated from above by a "T" piece. I presume the photo is from below.

Has the T piece broken off ?


its also a half tee ...... could be seized in the valve try a bit of heat...
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Its not the winning but taking part! or is it taking apart?
Lancias:
1955 Aurelia B12
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia Sport 1600
1983 HPE VX
1988 Delta 1.6GTie
1998 Zeta 21.  12v
nthomas1
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« Reply #4 on: 04 February, 2020, 06:56:24 PM »


Here's the drain nut on my S2 before I disassembled the cooling system. Not very sharp I'm afraid.


* IMG_4846 copy.JPG (1052.54 KB, 2543x1448 - viewed 422 times.)
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Norm Thomas
Ormskirk, Lancashire

Own:
1973 Fulvia S2 Coupe
Previous Lancias: S2 Coupe and S3 Coupe in late 1970s
ColinMarr
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« Reply #5 on: 05 February, 2020, 11:22:39 AM »

And here’s what an S2 unit looks like when not on a car. This one is without the bolt and has a thread that needs re-cutting. Free to anyone who wants it, plus postage.


* S2 drain.jpg (397.94 KB, 2016x1512 - viewed 403 times.)
« Last Edit: 05 February, 2020, 12:12:55 PM by ColinMarr » Logged
richgoldfinch
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« Reply #6 on: 05 February, 2020, 01:06:34 PM »

Hi, thanks .  It is a s1 car (68) and yes the t piece is there, do I turn that to open the tap?

Thanks Richard
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Neil
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« Reply #7 on: 05 February, 2020, 01:51:40 PM »

There is no tap, but a bolt with a seal in that socket, in the photo it is upside down from its usual installation position, remove the bolt and that is drains the system to larger extent, or pull the larger hose off the bottom of the radiator will do the same.
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Neil   
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1973 Fulvia S2 1.3
eog
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« Reply #8 on: 05 February, 2020, 02:35:54 PM »

In my view - Pulling off the hose will help release more crud out of the cooling system.
Maurice
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frankxhv773t
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« Reply #9 on: 05 February, 2020, 06:19:32 PM »

If it's a "T" piece rather than a bolt then isn't it a quarter turn to open the tap as on other models?
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lancialulu
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« Reply #10 on: 05 February, 2020, 06:57:00 PM »

If it's a "T" piece rather than a bolt then isn't it a quarter turn to open the tap as on other models?

Yes thats correct. Sometimes seized so go carefully. I think it is clockwise to open.
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Its not the winning but taking part! or is it taking apart?
Lancias:
1955 Aurelia B12
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia Sport 1600
1983 HPE VX
1988 Delta 1.6GTie
1998 Zeta 21.  12v
fay66
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« Reply #11 on: 05 February, 2020, 07:57:45 PM »

If it's a "T" piece rather than a bolt then isn't it a quarter turn to open the tap as on other models?

Yes thats correct. Sometimes seized so go carefully. I think it is clockwise to open.
Not so much a T as cranked to one side.
Sure mine was anticlockwise last time I used it, but now have the same problem.
I think it was series 1 only.
Brian
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« Last Edit: 05 February, 2020, 07:59:46 PM by fay66 » Logged

Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
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frankxhv773t
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« Reply #12 on: 06 February, 2020, 08:50:05 AM »

Undoing the jubilee clips and extracting the tap section to free it up at the bench would seem to be the prudent course of action.
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richgoldfinch
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« Reply #13 on: 06 February, 2020, 02:08:05 PM »

Thanks all, much appreciated.   I'll give the handle a try and if that doesn't work undo the hose. 
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lancialulu
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« Reply #14 on: 06 February, 2020, 03:20:21 PM »

If it is a series 1 then I recommend also undoing it the the heater tap and with another length of hose back flush with the heater valve open.
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Its not the winning but taking part! or is it taking apart?
Lancias:
1955 Aurelia B12
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia Sport 1600
1983 HPE VX
1988 Delta 1.6GTie
1998 Zeta 21.  12v
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