Pressure building up in coolant system.

Bush041083 · Apr 22, 2013

Hi there. Ive just bought a 2004 1.8 freelander. Everything was going fine untill I stopped at traffic lights to see steam coming from under bonnit. I pulled over to find header tank just about empty. coolant everywhere which looked to have copper filings in it. All pipes were rock hard. My first fought was the dreaded head gasket. When I opened header tank most o of coolant came back into it. Since the I have flushed though rad and pipes and changed thermostat which hasn't helped. No sighs of HGF in oil or water. And temp stays at half. Any ideas.

Rawly86 · Apr 22, 2013

You may have more luck in the freelander section, and you may also want to introduce yourself here first....Introduce Yourself - Land Rover Zone

THEengineer · Apr 22, 2013

Bush041083 said:
Hi there. Ive just bought a 2004 1.8 freelander. Everything was going fine untill I stopped at traffic lights to see steam coming from under bonnit. I pulled over to find header tank just about empty. coolant everywhere which looked to have copper filings in it. All pipes were rock hard. My first fought was the dreaded head gasket. When I opened header tank most o of coolant came back into it. Since the I have flushed though rad and pipes and changed thermostat which hasn't helped. No sighs of HGF in oil or water. And temp stays at half. Any ideas.

AS SAID THE GAYLANDER SECTION WOULD BE MORE HELPFUL,but one easy check to do if when the engine is stone cold,if you get your water hoses rock hard and a lot of pressure when you remove your header tank cap its a very clear sign your head gasket has failed,they dont always fail with oil mixing with water

SteveD · Apr 22, 2013

Maybe this thread will help http://www.landyzone.co.uk/lz/f16/buying-crock-****-if-you-already-have-76002.html

Bush041083 · Apr 23, 2013

THEengineer said:
AS SAID THE GAYLANDER SECTION WOULD BE MORE HELPFUL,but one easy check to do if when the engine is stone cold,if you get your water hoses rock hard and a lot of pressure when you remove your header tank cap its a very clear sign your head gasket has failed,they dont always fail with oil mixing with water

Hoses are not hard when cold only once I have been for a run and heated up engine. If just started and left idling hoses heat up but no pressure builds up. Hose coming from bottom of rad to thermostat stone cold all the time.

ruffday · Apr 24, 2013

Changing the stat would be a good place to start.

Bush041083 · Apr 24, 2013

Stat already been changed.

ruffday · Apr 24, 2013

Bush041083 said:
Stat already been changed.

It could be faulty.

Id take it out and see from there.

What about the water pump.
Blocked heater matrix.
Blocked Radiator.

Best thing to do would be to get it to a garage and have a sniff test done to see if the head gasket has gone.

Oldseadog · Apr 24, 2013

You're supposed to have between 15 & 17 psi in the cooling system!

That's what makes it work!

Bush041083 · Apr 24, 2013

ruffday said:
It could be faulty.

Id take it out and see from there.

What about the water pump.
Blocked heater matrix.
Blocked Radiator.

Best thing to do would be to get it to a garage and have a sniff test done to see if the head gasket has gone.

The stat was repaced last week with one from LR when all this started. I checked hose other side of it today and pipe was hot!! Now so new one must be working. But this is first time it's happened and only after driving 40 miles. Would faulty header tank cause any of my probs. can see small cracks around neck.

THEengineer · Apr 24, 2013

Bush041083 said:
Hoses are not hard when cold only once I have been for a run and heated up engine. If just started and left idling hoses heat up but no pressure builds up. Hose coming from bottom of rad to thermostat stone cold all the time.

rad could be blocked try taking it out filling it full of coke cola,leave it over night and flush out in regards to your stat is it a inline,remote prt type?

SteveD · Apr 24, 2013

Looking back at the OP, doesn't radweld look like copper filings in a liquid?

Could be the seller tried to block a leak and used too much, blocking the radiator.

THEengineer · Apr 24, 2013

SteveD said:
Looking back at the OP, doesn't radweld look like copper filings in a liquid?

Could be the seller tried to block a leak and used too much, blocking the radiator.

yes it does,and yes it could

SteveD · Apr 25, 2013

Thought it did, horrible stuff.

Rad looks favourite then, loads on eBay from £60 to £100 new.

Oldseadog · Apr 25, 2013

Clean it out and flush it first, that you will know if it needs replacing ... Unless of course you just want to throw money at it!!

Bush041083 · Apr 25, 2013

THEengineer said:
rad could be blocked try taking it out filling it full of coke cola,leave it over night and flush out in regards to your stat is it a inline,remote prt type?

Yes is in line type.

fanatic · Apr 25, 2013

It's a K series piece of **** that has had Kalimex in it

http://www.kalimex.co.uk/

THEengineer · Apr 25, 2013

Bush041083 said:
Yes is in line type.

well theres 3 things that will cause over pressuring
HGF
knacked stat
blocked rad
you also have a IMF(inlet manifold gasket)but i dont think your issues here
if you have ruled out the stat,i would check out the rad if that fails you need a compression test or similar to rule out HGF

trax · Apr 25, 2013

THEengineer said:
well theres 3 things that will cause over pressuring
HGF
knacked stat
blocked rad
you also have a IMF(inlet manifold gasket)but i dont think your issues here
if you have ruled out the stat,i would check out the rad if that fails you need a compression test or similar to rule out HGF

Is there a quick way to check for a blocked rad?

cold spots or take the bung out and check for water movement? Or is it a rad out and hose pipe jobby?

Oldseadog · Apr 26, 2013

Rad out, lay it flat, fill with coca cola, leave for a couple of hours shaking it occasionally, empty and then give it a good flushing out.

Replace and refill the system.

Simple, but effective!

Pressure building up in coolant system.

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