Radiator

Hi all,

Okay Japenses spec Discovery 2.5TDI XS export, 1996 on a British P reg..

Had a good read of the Haynes manaul which is about as much use a chocolate
fireguard. How do I drain tthe radiator? Haynes says take off bottom hose
and drain, but on drivers side there isn't one and passenger side is angled
upwards and will leave half the radiator full. I want to give it a good
flush and stick some new coolant in.

Help appreaciated or anyone near me in Hartlepool, show me what to do?

Andy

Should read Japanese

Andy


"Andrew Renshaw" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> Okay Japenses spec Discovery 2.5TDI XS export, 1996 on a British P reg..
>
> Had a good read of the Haynes manaul which is about as much use a
> chocolate fireguard. How do I drain tthe radiator? Haynes says take off
> bottom hose and drain, but on drivers side there isn't one and passenger
> side is angled upwards and will leave half the radiator full. I want to
> give it a good flush and stick some new coolant in.
>
> Help appreaciated or anyone near me in Hartlepool, show me what to do?
>
> Andy
>
>

"Andrew Renshaw" <[email protected]> wrote in message
news:[email protected]...
> Hi all,
>
> Okay Japenses spec Discovery 2.5TDI XS export, 1996 on a British P reg..
>
> Had a good read of the Haynes manaul which is about as much use a
> chocolate fireguard. How do I drain tthe radiator? Haynes says take off
> bottom hose and drain, but on drivers side there isn't one and passenger
> side is angled upwards and will leave half the radiator full. I want to
> give it a good flush and stick some new coolant in.
>
> Help appreaciated or anyone near me in Hartlepool, show me what to do?
>
> Andy
>
>

Andrew:

You can back flush the radiator by running the engine with the bottom hose
off while filling the system with fresh water from a garden hose. When the
water coming from the hose is clear the entire system will have been flushed
remember to turn on the heat to expel the coolant in the heater core.

Jack

On or around Fri, 19 May 2006 19:20:34 -0400, "Jack" <[email protected]>
enlightened us thusly:

>
>"Andrew Renshaw" <[email protected]> wrote in message
>news:[email protected]...
>> Hi all,
>>
>> Okay Japenses spec Discovery 2.5TDI XS export, 1996 on a British P reg..
>>
>> Had a good read of the Haynes manaul which is about as much use a
>> chocolate fireguard. How do I drain tthe radiator? Haynes says take off
>> bottom hose and drain, but on drivers side there isn't one and passenger
>> side is angled upwards and will leave half the radiator full. I want to
>> give it a good flush and stick some new coolant in.
>>
>> Help appreaciated or anyone near me in Hartlepool, show me what to do?
>>
>> Andy
>>
>>
>
>Andrew:
>
>You can back flush the radiator by running the engine with the bottom hose
>off while filling the system with fresh water from a garden hose. When the
>water coming from the hose is clear the entire system will have been flushed
>remember to turn on the heat to expel the coolant in the heater core.

that's an interesting technique. But I bet it's no more likely to clear a
blocked rad than any other I've tried. The problem I've always found is
that the size of any water supply you can reasonably apply to the job will
happily flow through about half the rad tubes without generating any
pressure. Unfortunately, half the rad tubes only give you half the cooling.

--
Austin Shackles. www.ddol-las.net my opinions are just that
Travel The Galaxy! Meet Fascinating Life Forms...
------------------------------------------------\
>> http://www.schlockmercenary.com/ << \ ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!

reverse flushing helps too. but very messy.

In message <[email protected]>
Austin Shackles <[email protected]> wrote:

> On or around Fri, 19 May 2006 19:20:34 -0400, "Jack" <[email protected]>
> enlightened us thusly:
>
> >
> >"Andrew Renshaw" <[email protected]> wrote in message
> >news:[email protected]...
> >> Hi all,
> >>
> >> Okay Japenses spec Discovery 2.5TDI XS export, 1996 on a British P reg..
> >>
> >> Had a good read of the Haynes manaul which is about as much use a
> >> chocolate fireguard. How do I drain tthe radiator? Haynes says take off
> >> bottom hose and drain, but on drivers side there isn't one and passenger
> >> side is angled upwards and will leave half the radiator full. I want to
> >> give it a good flush and stick some new coolant in.
> >>
> >> Help appreaciated or anyone near me in Hartlepool, show me what to do?
> >>
> >> Andy
> >>
> >>
> >
> >Andrew:
> >
> >You can back flush the radiator by running the engine with the bottom hose
> >off while filling the system with fresh water from a garden hose. When the
> >water coming from the hose is clear the entire system will have been flushed
> >remember to turn on the heat to expel the coolant in the heater core.
>
> that's an interesting technique. But I bet it's no more likely to clear a
> blocked rad than any other I've tried. The problem I've always found is
> that the size of any water supply you can reasonably apply to the job will
> happily flow through about half the rad tubes without generating any
> pressure. Unfortunately, half the rad tubes only give you half the cooling.
>

Back-flushing is far more effective.

Richard
--
www.beamends-lrspares.co.uk [email protected]
RISC-OS - Where have all the good guys gone?
Boycott the Yorkshire Dales - No Play, No Pay

On or around Sat, 20 May 2006 13:45:17 +0100, beamendsltd
<[email protected]> enlightened us thusly:

>In message <[email protected]>
> Austin Shackles <[email protected]> wrote:
>
>>
>> that's an interesting technique. But I bet it's no more likely to clear a
>> blocked rad than any other I've tried. The problem I've always found is
>> that the size of any water supply you can reasonably apply to the job will
>> happily flow through about half the rad tubes without generating any
>> pressure. Unfortunately, half the rad tubes only give you half the cooling.
>>
>
>Back-flushing is far more effective.

yeah, but my point is that to clear more than a few tubes requires a bigger
water supply than can readily be supplied. once say about 40 tubes are
clear, you can't generate pressure to blast the others without supplying
ever more water. a largeish pump would do it, provided you could regulate
the pressure sutiably, or you risk blowing the rad apart instead. I'm
takling here about properly blocked rads, not once with just a littel bit of
crud in 'em.


--
Austin Shackles. www.ddol-las.net my opinions are just that
"There is plenty of time to win this game, and to thrash the Spaniards
too" Sir Francis Drake (1540? - 1596) Attr. saying when the Armarda was
sighted, 20th July 1588

interesting to read this as I have just changed the coolant in my 300 tdi and also put a new thermostat in and still I only get about one degree warmer than an ice lolly after an hours drive, maybe my radiator is blocked? is there such a solution on the market to clean the muck out?

GPZ900 , if your rad was blocked your temp would go thru the roof.
If you have fitted new thermo, and temp still v low then you need to think about faulty sender, or guage.
Run engine at v fast idle , from cold , see if you get a sudden rise in temp of top hose by holding hose to see if temp change occurs, if it does then thermo is opening, this means engine has reached running temp. Which in turn confirms the sender/guage fault.

Method to back flush Rad . you will need acess to good supply compressed air. Normally use special tool, but can jerry rig by modding old bottom hose and fitting compression type screw type tyre valve, and closing off end, other end fit to bottom rad inlet/ the one that usually goes to engine return inlet Then fill rad with water from other end (i.e thermo inlet end)when full release compressed air into bottom hose, (watch out for lots of water coming out of open end of rad. Caution if your radiator is a bit corroded and antique the above method is not a good idea , supplying air thru normal 1/2 inch hose usually causes no problems .