Blue radiator cap overflowing.

1
I did my coolant change service yesterday. All went well,bleeding system etc. The van is parked nose up on our steep driveway which helps bleeding the system.This morning i found the coolant flooding back through the blue radiator cap into the expansion tank and overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks Bill.
2
The cap is supposed to vent to the expansion tank under pressure. The cap can be pressure tested by any mechanic. Have a look at the valves in the cap for damage.



> Bill <marg_bill@westnet.com.au> wrote:
>
I did my coolant change service yesterday. All went well,bleeding system etc. The van is
parked nose up on our steep driveway which helps bleeding the system.This morning i found
the coolant flooding back through the blue radiator cap into the expansion tank and
overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks
at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as
simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused
it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks
Bill.
3
Thanks Phil i'll check the valves. Bill

--- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
>
> The cap is supposed to vent to the expansion tank under pressure. The cap can be pressure tested by any mechanic. Have a look at the valves in the cap for damage.
>
>
>
> > Bill <marg_bill@...> wrote:
> >
> I did my coolant change service yesterday. All went well,bleeding system etc. The van is
> parked nose up on our steep driveway which helps bleeding the system.This morning i found
> the coolant flooding back through the blue radiator cap into the expansion tank and
> overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks
> at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as
> simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused
> it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks
> Bill.
>
4
Bill,

Sorry to hear of your expensive misadventure. Adding insult to injury, had the coolant expelled on your lawn, it kills lawn better than roundup.

Worrying if the blue cap has failed. I don't recall anyone reporting here of such a failure. We used to be told here ad nauseum to get rid of the older black cap due to a history of its failure and fit the replacement blue one.

Worst case scenario is some failure causing air to be introduced into the cooling system, maybe around the heads and as a consequence, forcing the coolant out through the blue cap and out into the overflow tank and then onto the ground.

I've added a piezo audible alarm to the expansion tank to early warn me of an unexpected too low coolant level occurrence. Also a differing audible piezo alarm to early warn me of an unexpected too high overflow tank occurrence. Idea being for the latter one, from whatever cause, to try and avoid the scenario you have just experienced.

I find parking on too steep a hill for a coolant change only makes it harder to do. I now ignore the prescriptive method, reckon parking it on the flat or just a slight rise at the front works just fine and simpler.

Please advise here your blue cap etc findings. TIA. Good luck. Cheers.

Ken


 

To: Syncro_T3_Australia@yahoogroups.com
From: marg_bill@westnet.com.au
Date: Sun, 27 Nov 2011 21:41:23 +0000
Subject: [Syncro_T3_Australia] Blue radiator cap overflowing.

 
I did my coolant change service yesterday. All went well,bleeding system etc. The van is parked nose up on our steep driveway which helps bleeding the system.This morning i found the coolant flooding back through the blue radiator cap into the expansion tank and overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks Bill.


5

Bill,

For that to occur, there has to be a leak that is letting air into the system.  Since there were no leaks prior to the coolant change, you will need to check whatever bleed points that you used and determine that they are sealing (not letting air back into the system) and the seals on the catch tank and overflow caps.  If the caps were functioning properly before the coolant change, it is more likely to be the cap seals than the cap valves. 

Les

 

From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Bill
Sent: 28 November 2011 08:41
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] Blue radiator cap overflowing.

I did my coolant change service yesterday. All went well,bleeding system etc. The van is parked nose up on our steep driveway which helps bleeding the system.This morning i found the coolant flooding back through the blue radiator cap into the expansion tank and overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks Bill.

6
it's not likely the 'suck back' valve in the cap failed in the open position.
Possible ......but I've never seen it happen, ever.
 
The blue caps don't fit the pressure  bottle ( I call the one with the blue cap on it the and the other one the overflow or license plate bottle )
don't fit the pressure bottle that well sometimes.
 
I'd check that.
and it does release excessive pressure to the license plate bottle..
at something like 15 psi ..
and ...........I have seen them not release pressure like a normal radiator cap too ...
like blow the bottle out of shape and push out the level sensor.
 
we could talk about this forever.............but  I find it totally is not necessary to use the expensive blue coolant, but no need to get in to a coolant type war or dragged out discussion here either.
 
Scott
----- Original Message -----
From: Bill
Sent: Sunday, November 27, 2011 3:03 PM
Subject: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.

 

Thanks Phil i'll check the valves. Bill

--- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
>
> The cap is supposed to vent to the expansion tank under pressure. The cap can be pressure tested by any mechanic. Have a look at the valves in the cap for damage.
>
>
>
> > Bill <marg_bill@...> wrote:
> >
> I did my coolant change service yesterday. All went well,bleeding system etc. The van is
> parked nose up on our steep driveway which helps bleeding the system.This morning i found
> the coolant flooding back through the blue radiator cap into the expansion tank and
> overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks
> at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as
> simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused
> it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks
> Bill.
>

7
to test the blue cap, you have to make a nipple to let "external" pressure in.

You can use compressed air which is regulated by regulator into the clossed coolant system. The blue cap will open at ....... ( I'm not sure, see the manual.) This will help you check the cap and other leak dipping.

The method to put pressure in :
1. Using the professional tester, which need adaptor to be placed instead of the blue cap. This method check only the leakage but not the cap.

2. The way I use is using "Banjo Nut" at the rad's bleeding hole and the regulated compressed air. But this method need water to be fully filled before process, rear van up hill, and need to be fully bleeding again once the test is finished.

I also use this method to prove blown head, The compressed coolant will leak in to the bore and will be lots of water come out of the exhast when star the engine ( remove the exhast from the engine first ).

It also be checked by reading guage droping at the air compressor' s regulator by closing air valve.

Apologise for my Engilsh.

Hanniboon.



Sent from Boon's iPad2

On 28 พ.ย. 2554, at 11:07, "Les Harris" <leslieharris@optusnet.com.au> wrote:

 

Bill,

For that to occur, there has to be a leak that is letting air into the system.  Since there were no leaks prior to the coolant change, you will need to check whatever bleed points that you used and determine that they are sealing (not letting air back into the system) and the seals on the catch tank and overflow caps.  If the caps were functioning properly before the coolant change, it is more likely to be the cap seals than the cap valves. 

Les

 

From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Bill
Sent: 28 November 2011 08:41
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] Blue radiator cap overflowing.

I did my coolant change service yesterday. All went well,bleeding system etc. The van is parked nose up on our steep driveway which helps bleeding the system.This morning i found the coolant flooding back through the blue radiator cap into the expansion tank and overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks Bill.

8
To test the inlet of the cap.

Put mouth to nipple and blow.

To test the pressure outlet of the cap.

Use mechanic's pressure tester.



> Hanniboon <hanniboon@yahoo.com> wrote:
>
> to test the blue cap, you have to make a nipple to let "external"
> pressure in.
>
> You can use compressed air which is regulated by regulator into the
> clossed coolant system. The blue cap will open at ....... ( I'm not
> sure, see the manual.) This will help you check the cap and other leak
> dipping.
>
> The method to put pressure in :
> 1. Using the professional tester, which need adaptor to be placed
> instead of the blue cap. This method check only the leakage but not the
> cap.
>
> 2. The way I use is using "Banjo Nut" at the rad's bleeding hole and the
> regulated compressed air. But this method need water to be fully filled
> before process, rear van up hill, and need to be fully bleeding again
> once the test is finished.
>
> I also use this method to prove blown head, The compressed coolant will
> leak in to the bore and will be lots of water come out of the exhast
> when star the engine ( remove the exhast from the engine first ).
>
> It also be checked by reading guage droping at the air compressor' s
> regulator by closing air valve.
>
> Apologise for my Engilsh.
>
> Hanniboon.
>
>
>
> Sent from Boon's iPad2
>
> On 28 ������.������. 2554, at 11:07, "Les Harris"
> <leslieharris@optusnet.com.au> wrote:
>
> > Bill,
> >
> > For that to occur, there has to be a leak that is letting air into the
> system. Since there were no leaks prior to the coolant change, you will
> need to check whatever bleed points that you used and determine that
> they are sealing (not letting air back into the system) and the seals on
> the catch tank and overflow caps. If the caps were functioning properly
> before the coolant change, it is more likely to be the cap seals than
> the cap valves.
> >
> > Les
> >
> >
> >
> > From: Syncro_T3_Australia@yahoogroups.com
> [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Bill
> > Sent: 28 November 2011 08:41
> > To: Syncro_T3_Australia@yahoogroups.com
> > Subject: [Syncro_T3_Australia] Blue radiator cap overflowing.
> >
> > I did my coolant change service yesterday. All went well,bleeding
> system etc. The van is parked nose up on our steep driveway which helps
> bleeding the system.This morning i found the coolant flooding back
> through the blue radiator cap into the expansion tank and overflowing
> onto the driveway. Before i changed the coolant there were no issues,
> with leaks at all. The cooling system performed as it should. Is the
> blue cap stuffed?Hope it is as simple as that. Are there any basic tests
> for the blue cap? Could disturbing it have caused it to lock open and
> dump the best part of a $100 of coolant on my driveway. Ideas? Thanks
> Bill.
> >
> >
9
Phill,

re - "The cap is supposed to vent to the expansion tank under pressure."

Typo? Of course you meant - "The cap is supposed to vent the expansion tank under pressure."

ETKA does name it "expansion tank". That's the one with the blue "locking cover."

Also, the overflow tank is named "reservoir". Makes sense. Coolant gets pushed in and sucked out. Clear as?

Cheers.

Ken

To: Syncro_T3_Australia@yahoogroups.com
From: ScottDaniel@turbovans.com
Date: Mon, 28 Nov 2011 17:50:17 -0800
Subject: Re: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.

 

it's not likely the 'suck back' valve in the cap failed in the open position.
Possible ......but I've never seen it happen, ever.
 
The blue caps don't fit the pressure  bottle ( I call the one with the blue cap on it the and the other one the overflow or license plate bottle )
don't fit the pressure bottle that well sometimes.
 
I'd check that.
and it does release excessive pressure to the license plate bottle..
at something like 15 psi ..
and ...........I have seen them not release pressure like a normal radiator cap too ...
like blow the bottle out of shape and push out the level sensor.
 
we could talk about this forever.............but  I find it totally is not necessary to use the expensive blue coolant, but no need to get in to a coolant type war or dragged out discussion here either.
 
Scott
----- Original Message -----
From: Bill
Sent: Sunday, November 27, 2011 3:03 PM
Subject: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.

 
Thanks Phil i'll check the valves. Bill

--- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
>
> The cap is supposed to vent to the expansion tank under pressure. The cap can be pressure tested by any mechanic. Have a look at the valves in the cap for damage.
>
>
>
> > Bill <marg_bill@...> wrote:
> >
> I did my coolant change service yesterday. All went well,bleeding system etc. The van is
> parked nose up on our steep driveway which helps bleeding the system.This morning i found
> the coolant flooding back through the blue radiator cap into the expansion tank and
> overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks
> at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as
> simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused
> it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks
> Bill.
>



10
To my understanding, the blue cap is irreversible by normal method.

Let's say it will start to vent out at 0.8 bar then fully open at 1.0 bar.

When the pressure drop, the cap will start closing at 0.9 and fully close at 0.6 bar.

This operation will let the coolant to be "suck back" to the pressure tank but not always open.


Correct me if I m wrong.

Sent from Boon's iPad2

On 29 พ.ย. 2554, at 10:50, Ken Garratt <unclekenz@hotmail.com> wrote:

 

Phill,

re - "The cap is supposed to vent to the expansion tank under pressure."

Typo? Of course you meant - "The cap is supposed to vent the expansion tank under pressure."

ETKA does name it "expansion tank". That's the one with the blue "locking cover."

Also, the overflow tank is named "reservoir". Makes sense. Coolant gets pushed in and sucked out. Clear as?

Cheers.

Ken

To: Syncro_T3_Australia@yahoogroups.com
From: ScottDaniel@turbovans.com
Date: Mon, 28 Nov 2011 17:50:17 -0800
Subject: Re: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.

 

it's not likely the 'suck back' valve in the cap failed in the open position.
Possible ......but I've never seen it happen, ever.
 
The blue caps don't fit the pressure  bottle ( I call the one with the blue cap on it the and the other one the overflow or license plate bottle )
don't fit the pressure bottle that well sometimes.
 
I'd check that.
and it does release excessive pressure to the license plate bottle..
at something like 15 psi ..
and ...........I have seen them not release pressure like a normal radiator cap too ...
like blow the bottle out of shape and push out the level sensor.
 
we could talk about this forever.............but  I find it totally is not necessary to use the expensive blue coolant, but no need to get in to a coolant type war or dragged out discussion here either.
 
Scott
----- Original Message -----
From: Bill
Sent: Sunday, November 27, 2011 3:03 PM
Subject: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.

 
Thanks Phil i'll check the valves. Bill

--- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
>
> The cap is supposed to vent to the expansion tank under pressure. The cap can be pressure tested by any mechanic. Have a look at the valves in the cap for damage.
>
>
>
> > Bill <marg_bill@...> wrote:
> >
> I did my coolant change service yesterday. All went well,bleeding system etc. The van is
> parked nose up on our steep driveway which helps bleeding the system.This morning i found
> the coolant flooding back through the blue radiator cap into the expansion tank and
> overflowing onto the driveway. Before i changed the coolant there were no issues, with leaks
> at all. The cooling system performed as it should. Is the blue cap stuffed?Hope it is as
> simple as that. Are there any basic tests for the blue cap? Could disturbing it have caused
> it to lock open and dump the best part of a $100 of coolant on my driveway. Ideas? Thanks
> Bill.
>



11
That's it.



> Hanniboon <hanniboon@yahoo.com> wrote:
>
> To my understanding, the blue cap is irreversible by normal method.
>
> Let's say it will start to vent out at 0.8 bar then fully open at 1.0
> bar.
>
> When the pressure drop, the cap will start closing at 0.9 and fully
> close at 0.6 bar.
>
> This operation will let the coolant to be "suck back" to the pressure
> tank but not always open.
>
>
> Correct me if I m wrong.
>
> Sent from Boon's iPad2
>
> On 29 ������.������. 2554, at 10:50, Ken Garratt <unclekenz@hotmail.com>
> wrote:
>
> > Phill,
> >
> > re - "The cap is supposed to vent to the expansion tank under
> pressure."
> >
> > Typo? Of course you meant - "The cap is supposed to vent the expansion
> tank under pressure."
> >
> > ETKA does name it "expansion tank". That's the one with the blue
> "locking cover."
> >
> > Also, the overflow tank is named "reservoir". Makes sense. Coolant
> gets pushed in and sucked out. Clear as?
> >
> > Cheers.
> >
> > Ken
> >
> > To: Syncro_T3_Australia@yahoogroups.com
> > From: ScottDaniel@turbovans.com
> > Date: Mon, 28 Nov 2011 17:50:17 -0800
> > Subject: Re: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.
> >
> >
> >
> > it's not likely the 'suck back' valve in the cap failed in the open
> position.
> > Possible ......but I've never seen it happen, ever.
> >
> > The blue caps don't fit the pressure bottle ( I call the one with the
> blue cap on it the and the other one the overflow or license plate
> bottle )
> > don't fit the pressure bottle that well sometimes.
> >
> > I'd check that.
> > and it does release excessive pressure to the license plate bottle..
> > at something like 15 psi ..
> > and ...........I have seen them not release pressure like a normal
> radiator cap too ...
> > like blow the bottle out of shape and push out the level sensor.
> >
> > we could talk about this forever.............but I find it totally is
> not necessary to use the expensive blue coolant, but no need to get in
> to a coolant type war or dragged out discussion here either.
> >
> > Scott
> > ----- Original Message -----
> > From: Bill
> > To: Syncro_T3_Australia@yahoogroups.com
> > Sent: Sunday, November 27, 2011 3:03 PM
> > Subject: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.
> >
> >
> > Thanks Phil i'll check the valves. Bill
> >
> > --- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
> > >
> > > The cap is supposed to vent to the expansion tank under pressure.
> The cap can be pressure tested by any mechanic. Have a look at the
> valves in the cap for damage.
> > >
> > >
> > >
> > > > Bill <marg_bill@...> wrote:
> > > >
> > > I did my coolant change service yesterday. All went well,bleeding
> system etc. The van is
> > > parked nose up on our steep driveway which helps bleeding the
> system.This morning i found
> > > the coolant flooding back through the blue radiator cap into the
> expansion tank and
> > > overflowing onto the driveway. Before i changed the coolant there
> were no issues, with leaks
> > > at all. The cooling system performed as it should. Is the blue cap
> stuffed?Hope it is as
> > > simple as that. Are there any basic tests for the blue cap? Could
> disturbing it have caused
> > > it to lock open and dump the best part of a $100 of coolant on my
> driveway. Ideas? Thanks
> > > Bill.
> > >
> >
> >
> >
> >
12
Yes, that's about it Ken.



> Ken Garratt <unclekenz@hotmail.com> wrote:
>
>
> Phill,
> re - "The cap is supposed to vent to the expansion tank under pressure."
> Typo? Of course you meant - "The cap is supposed to vent the expansion
> tank under pressure."
> ETKA does name it "expansion tank". That's the one with the blue
> "locking cover."
> Also, the overflow tank is named "reservoir". Makes sense. Coolant gets
> pushed in and sucked out. Clear as?
> Cheers.
> Ken
> To: Syncro_T3_Australia@yahoogroups.com
> From: ScottDaniel@turbovans.com
> Date: Mon, 28 Nov 2011 17:50:17 -0800
> Subject: Re: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> it's not likely the 'suck back' valve in the cap failed in the open
> position.
> Possible ......but I've never seen it happen, ever.
>
> The blue caps don't fit the pressure bottle ( I call the one with the
> blue cap on it the and the other one the overflow or license plate
> bottle )
>
> don't fit the pressure bottle that well sometimes.
>
> I'd check that.
> and it does release excessive pressure to the license plate bottle..
> at something like 15 psi ..
> and ...........I have seen them not release pressure like a normal
> radiator
> cap too ...
> like blow the bottle out of shape and push out the level sensor.
>
> we could talk about this forever.............but I find it totally is
> not necessary to use the expensive blue coolant, but no need to get in
> to a
> coolant type war or dragged out discussion here either.
>
> Scott
>
> ----- Original Message -----
> From:
> Bill
> To: Syncro_T3_Australia@yahoogroups.com
>
> Sent: Sunday, November 27, 2011 3:03
> PM
> Subject: [Syncro_T3_Australia] Re: Blue
> radiator cap overflowing.
>
>
>
> Thanks Phil i'll check the valves. Bill
>
> --- In Syncro_T3_Australia@yahoogroups.com,
> plander@... wrote:
> >
> > The cap is supposed to vent to the
> expansion tank under pressure. The cap can be pressure tested by any
> mechanic.
> Have a look at the valves in the cap for damage.
> >
> >
> >
>
> > > Bill <marg_bill@...> wrote:
> > >
> > I did my
> coolant change service yesterday. All went well,bleeding system etc.
> The van
> is
> > parked nose up on our steep driveway which helps bleeding the
> system.This morning i found
> > the coolant flooding back through the blue
> radiator cap into the expansion tank and
> > overflowing onto the
> driveway. Before i changed the coolant there were no issues, with
> leaks
> > at all. The cooling system performed as it should. Is the blue
> cap stuffed?Hope it is as
> > simple as that. Are there any basic tests
> for the blue cap? Could disturbing it have caused
> > it to lock open and
> dump the best part of a $100 of coolant on my driveway. Ideas? Thanks
> >
> Bill.
> >
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
13
Appears problem solved.Yesterday i bled the system again using fresh rain water off our roof the night before.(not prepared to use coolant just yet) I changed the blue cap from my other van. Took the van for a good run up to valla. All appeared ok. Parked rear down on my drive last night. This morning the bloody thing has emptied itself through the overflow bottle via the blue cap(remember i swapped this cap from my other van)again. Fortunately two new caps arrived from justkampers that i ordered the night before(nice overnight delivery). Anyway the new caps it was not possible to blow back through the nipple. Both my old caps i could. Anyway the new cap is on, system bled, parked in drive with no apparent leak. Would appear to have valve stuck open on both caps. The night gremlins may go to work tonight but if you don't hear from me in the morning then it looks like faulty cap(caps). Buy the way the price of caps at vw coffs harbour $50 each, from justkampers $12.50 each. Thanks for all your help. Bill
14
Bill
Good to hear that it was a simple fix.

Are the JK caps VW?
Do they have 2 valves or one large one?

Phill



> Bill <marg_bill@westnet.com.au> wrote:
>
> Appears problem solved.Yesterday i bled the system again using fresh
> rain water off our roof the night before.(not prepared to use coolant
> just yet) I changed the blue cap from my other van. Took the van for a
> good run up to valla. All appeared ok. Parked rear down on my drive last
> night. This morning the bloody thing has emptied itself through the
> overflow bottle via the blue cap(remember i swapped this cap from my
> other van)again. Fortunately two new caps arrived from justkampers that
> i ordered the night before(nice overnight delivery). Anyway the new caps
> it was not possible to blow back through the nipple. Both my old caps i
> could. Anyway the new cap is on, system bled, parked in drive
> with no apparent leak. Would appear to have valve stuck open on both
> caps. The night gremlins may go to work tonight but if you don't hear
> from me in the morning then it looks like faulty cap(caps). Buy the way
> the price of caps at vw coffs harbour $50 each, from justkampers $12.50
> each. Thanks for all your help. Bill
15
Phill. Not vw. Appears to be one large valve. Anticipate any problems? Bill
16
No problem, I've just bought one the same from Tooley's. It's an unknown.

Phill



> Bill <marg_bill@westnet.com.au> wrote:
>
> Phill. Not vw. Appears to be one large valve. Anticipate any problems?
> Bill
17
So the blue one replaced the faulty black one.

Any bets on the likely colour of the one that replaces the faulty blue one?

Ken
To: Syncro_T3_Australia@yahoogroups.com
From: marg_bill@westnet.com.au
Date: Tue, 29 Nov 2011 05:17:29 +0000
Subject: [Syncro_T3_Australia] Re: Blue radiator cap overflowing.

 
Appears problem solved.Yesterday i bled the system again using fresh rain water off our roof the night before.(not prepared to use coolant just yet) I changed the blue cap from my other van. Took the van for a good run up to valla. All appeared ok. Parked rear down on my drive last night. This morning the bloody thing has emptied itself through the overflow bottle via the blue cap(remember i swapped this cap from my other van)again. Fortunately two new caps arrived from justkampers that i ordered the night before(nice overnight delivery). Anyway the new caps it was not possible to blow back through the nipple. Both my old caps i could. Anyway the new cap is on, system bled, parked in drive with no apparent leak. Would appear to have valve stuck open on both caps. The night gremlins may go to work tonight but if you don't hear from me in the morning then it looks like faulty cap(caps). Buy the way the price of caps at vw coffs harbour $50 each, from justkampers $12.50 each. Thanks for all your help. Bill