Overheating ( again )

Coley53 · Jul 7, 2014

I have read the various threads re; this problem and I am going with the expansion tank and associated hoses first.
Water seems to mysteriously disappear and then reappear I had a drive to the beach with the dogs( about seven miles) the expansion tank was normal on leaving but when checking on arrival at the beach the tank seemed empty! Left it until I came back, still apparently empty,topped it up to the mark and drove to local shops, came back to find a considerable amount of water under the vec, but on checking the expansion tank found it still at normal level, drove home temp gauge started to go above normal but went back to normal but after leaving it to cool went back and checked tank, empty!
Using available tools (big gob) I pressurised tank and was rewarded with a fountain of water from an apparently empty tank?
Any ideas:confused2

haigy · Jul 7, 2014

Expansion could have crack in.the go about half way up but will only leak under pressure.

Or the cap seal has gone causing it to leak unxer pressure.

Can be a sign of head gasket on way out

Coley53 · Jul 7, 2014

haigy said:
Expansion could have crack in.the go about half way up but will only leak under pressure.

Or the cap seal has gone causing it to leak unxer pressure.

Can be a sign of head gasket on way out

I have only had this problem since I had the P seal repaired, could this have a bearing on the problem do you reckon?

trax · Jul 13, 2014

any joy?

Coley53 · Jul 13, 2014

trax said:
any joy?

Tried bleeding it a couple of times as I thought the garage might just have "topped it up" after changing the P ring no change, earlier today decided to remove the stat and flush the whole thing out, did that earlier, tried a couple of tentative short runs, all OK, then took her out on a longer run ( the beach of my troubles

) seemed ok, left her for a while, came back water levels still ok came home the long way round and beasted her a bit,leaving it for a while before going out to check water levels.
On the runs she seemed fine other than she never got quite to normal temp, which is normal with the stat removed if IRC from my spannering days

Aye, water level still at normal, will drain and replace stat and top up later this week, hopefully will then be able to tackle other issues, intermittent speedo, stuck window........

trax · Jul 13, 2014

progress then

Coley53 · Jul 13, 2014

trax said:
progress then

Aye, I seem to be removing uneccesary bits as I progress

wilson294 · Jul 13, 2014

Have you tried burping the system? squeeze the hose while the cap is off

My header tank has a split above the water line it hisses steam when hot but the level is as it should be it dose not disappear and reappear as you describe

Coley53 · Jul 13, 2014

wilson294 said:
Have you tried burping the system? squeeze the hose while the cap is off

My header tank has a split above the water line it hisses steam when hot but the level is as it should be it dose not disappear and reappear as you describe[/QUOTE

Aye, tried most of the tips to be found using the search function, nowt worked, taking the stat out and running without it is an old trick and I was worried that it would trigger warnings from the emu ( or ecu) or whatever the thing is but seemingly mine is antique enough not to have such

Overheating ( again )

Coley53

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haigy

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Coley53

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trax

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Coley53

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trax

.

Coley53

Well-Known Member

wilson294

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Coley53

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