Strange Water temp & leak probs

stuckindamuck said:

Hi Guys -my defender 90 has been losing a bit of water lately and running a wee bit high temp wise, after checking for leaks and not finding any, I chucked some radweld in system, still using water!
The hose into radiator is v.warm but the outlet is cold,as in not cool-COLD.
Changed thermostat y'starday, when idling the gauge wont rise above half way but when driving it is almost on red???
drove 18 miles this morning and hoses as above xcept perhaps a bit warmer than usual, very little pressure from xpansion tank and the water is .vcold in the tank???

I can squeeze both large hoses and get water moving in xpansion tank, could I have a block radiator?
Also my fan runs constantly as soon as I start engine from cold.

Any advise would be great

cheers steven

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stuckindamuck said:

Hi Guys -my defender 90 has been losing a bit of water lately and running a wee bit high temp wise, after checking for leaks and not finding any, I chucked some radweld in system, still using water!
The hose into radiator is v.warm but the outlet is cold,as in not cool-COLD.
Changed thermostat y'starday, when idling the gauge wont rise above half way but when driving it is almost on red???
drove 18 miles this morning and hoses as above xcept perhaps a bit warmer than usual, very little pressure from xpansion tank and the water is .vcold in the tank???

I can squeeze both large hoses and get water moving in xpansion tank, could I have a block radiator?
Also my fan runs constantly as soon as I start engine from cold.

Any advise would be great

cheers steven

Click to expand...

stuckindamuck said:

Hi Guys -my defender 90 has been losing a bit of water lately and running a wee bit high temp wise, after checking for leaks and not finding any, I chucked some radweld in system, still using water!
The hose into radiator is v.warm but the outlet is cold,as in not cool-COLD.
Changed thermostat y'starday, when idling the gauge wont rise above half way but when driving it is almost on red???
drove 18 miles this morning and hoses as above xcept perhaps a bit warmer than usual, very little pressure from xpansion tank and the water is .vcold in the tank???

I can squeeze both large hoses and get water moving in xpansion tank, could I have a block radiator?
Also my fan runs constantly as soon as I start engine from cold.

Any advise would be great

cheers steven[/quote

It is normal for the fan to run from cold chap as it's a viscous fan, it sounds like you've got no circulation, water pump is the most likely culprit.

Riggaz

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stuckindamuck said:

Thanks for that guys -I just remembered another slant to the problem -If I take out the thermostat then everything is fine again, well not sure about leak as havent tried it for that long but the circulation and temp is fine, all hoses warm etc!! Does that mean that the pump is infact ok -whats the chances of thew new thermostat being faulty??

How can I check pump? - theres no movemnent in pulley or squeek from bearing,
if I took the top off pump and turned pump pulley bye hand should I be able to see water in the block moving??

cheers again steven

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stuckindamuck said:

Hi again -re - above water probs. Im now using almost half litre of water on a 36 mile journey !!!!!!!!!!
Cannot for the life of me find a leak, its not in the oil,its not getting chucked out the xpansion tank and it certainly aint going oot the xaust BUT IT IS GOING SOMEWHERE.

The closest thing I can find to a burst it the top hose into rad has rubbed half way thru (on the radius of air cleaner housing) could it possibly be enough to evaporate. Theres still nae sign of water lying anywhere though.

I'm on the verge of putting her into mechanic,

oh the joys

Have you checked the matrix and the rad? dont just look for damp look for residue of coolant ( green ) as well. Is there still a circulation issue?

Riggaz

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slob said:

get yerself a cooling system tester and get some pressure in it. if yer wanna pay postage yer can borrow mine but yer probably cheaper getting one from ebay

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