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[gareth.]

Reply to omegatoy why i think the hg is gone.

Well I havent had the motor yet, i'll probably now have it tomorrow.
so I havent driven it myself, but It is driving, and apparently loosing no power.
The garage mechanic said it could be the thermostat jammed on, but it wasn't so he said it s probably the hg.
The car is will overheat if driven a fair way and loose water, although this was watched out for and havent been fried.
The oil looks normal, no residue.
When I get hold of my mate i'll post more info.
What do you think guys?

[Omegatoy]

Reply to omegatoy why i think the hg is gone.

Well I havent had the motor yet, i'll probably now have it tomorrow.
so I havent driven it myself, but It is driving, and apparently loosing no power.
The garage mechanic said it could be the thermostat jammed on, but it wasn't so he said it s probably the hg.
The car is will overheat if driven a fair way and loose water, although this was watched out for and havent been fried.
The oil looks normal, no residue.
When I get hold of my mate i'll post more info.
What do you think guys?

first job has got to be waterpump and thermostat change then flush cooling system!!!

[TheBoy]

Reply to omegatoy why i think the hg is gone.

Well I havent had the motor yet, i'll probably now have it tomorrow.
so I havent driven it myself, but It is driving, and apparently loosing no power.
The garage mechanic said it could be the thermostat jammed on, but it wasn't so he said it s probably the hg.
The car is will overheat if driven a fair way and loose water, although this was watched out for and havent been fried.
The oil looks normal, no residue.
When I get hold of my mate i'll post more info.
What do you think guys?

This sounds very familiar.

The oil jets need to be clear, and if its had poor oil servicing, these could be blocked.

If the temp has gone much beyond 110C (100C on gauge), it could cause the head to crack (common bmw problem), or at best, HG to fail.

[gareth.]

Cheers fellas,

since talking to my mate he said the thermostat was ruled out at the garage, wether it was renewed i dont know yet.

he also said that the car looses power when a light like a thermometer comes on, but the expansion tank isn't empty?
And when you put cold water in then it goes on fine.

It has only overheated twice so I hope not too much damage has occured.

I will test it myself tomorrow, what would you do first? and could it be a hg or cracked block or even a water pump?

[TheBoy]

Cheers fellas,

since talking to my mate he said the thermostat was ruled out at the garage, wether it was renewed i dont know yet.

he also said that the car looses power when a light like a thermometer comes on, but the expansion tank isn't empty?
And when you put cold water in then it goes on fine.

It has only overheated twice so I hope not too much damage has occured.

I will test it myself tomorrow, what would you do first? and could it be a hg or cracked block or even a water pump?

oh fak....

[gareth.]

that dont sound good    

[Omegatoy]

Cheers fellas,

since talking to my mate he said the thermostat was ruled out at the garage, wether it was renewed i dont know yet.

he also said that the car looses power when a light like a thermometer comes on, but the expansion tank isn't empty?
And when you put cold water in then it goes on fine.

It has only overheated twice so I hope not too much damage has occured.

I will test it myself tomorrow, what would you do first? and could it be a hg or cracked block or even a water pump?

weel dont want to get your hopes up but if the light comes on engine goes to safe mode, but you say header tank not empty, but add cold water it goes again> how can you add water if its not empty? however it does sound like the waterpump is not corculating the coolant so when it get to hot it shuts down the engine to me change the wterpump!! they have a history of the silly plastic impellor falling off and causing similar probs to wht you have described

[gareth.]

but if the water pump was faulty, would you still lose water?

and the light he described was like a thermometer that u put in your mouth?
 
When he said it wasn't empty why is it over heating ? I will have to see that for myself tomorrow.

But it could be the shape of the bottle, and it dont look empty to him, and he is selling me the car, ha ha. even though its cheap.

[Andy B]

but if the water pump was faulty, would you still lose water?

and the light he described was like a thermometer that u put in your mouth?
 
When he said it wasn't empty why is it over heating ? I will have to see that for myself tomorrow.

But it could be the shape of the bottle, and it dont look empty to him, and he is selling me the car, ha ha. even though its cheap.

cos the pump isn't circulating the coolant. eventually you're going to loose coolant because it'l loose it out of the pressure  cap cos it's too hot.

[gareth.]

yes of course!

like I said I will get the car tomorrow, then I will see for my self, but this now sounds more likely, the water pump I mean. That is if the tank still has water in it.

I will have to wrap tissue paper around the cap to make sure thats where its coming from.

[TheBoy]

yes of course!

like I said I will get the car tomorrow, then I will see for my self, but this now sounds more likely, the water pump I mean. That is if the tank still has water in it.

I will have to wrap tissue paper around the cap to make sure thats where its coming from.

trust me, you'll know!

[TheBoy]

And as hinted earlier, do not let the temp go above 100C on gauge - that is in danger territory.

If left to just idle, does temp still go all the way up? Or is it only when using it?

[Omegatoy]

not sure leaving it on idle will actually boil it? reason being you will get a thermo syphon going
(as it was before waterpumps became the norm)
 assuming the headertank is high enough, actually tho thermosyphon was only used on fourpots if i remember correctly so maybe best to inore this!!!

[Ian_D]

When the pump went on my diesel (going about 70mph on the motorway) it took seconds for the temp to rise until the temp light came on, and the throttle pedal was basically switched off.

I pulled over STRAIGHT away and switched it off (infact I switched engine off once i got into the nearside lane, and had slowed to about 35 mph heading for the layby with brakes slammed hard on!! - lucky there wasn't any cars in the way!).  

It had spat about half a litre of water out of the expansion tank too.

I got the car home, and checked the water pump.. The impeller had broken off the shaft!

Without a pump, the engine would run on idle for about a minuet or so until the temperature started to rise to 1/3 way up. I didn’t want to leave it running any longer until I fitted a replacement pump, as the temp gauge is slow to respond in the Omega, and will possibly be hoter than it actually says.

Luckily for me, there doesn't seem to be any damage to the engine, and I've since done about 150 odd miles (engine has been running over 12 hrs now, and its not used any water ) - From what I've read, normally damage occurs.

[unlucky alf]

there was a guy on fleabay breaking one a while ago, said he was going to keep the head before scrapping the rest, i could try & find out if he has the head or not if you need it if ive still got his info

well i found his info & sent him a message yesterday, just hope he answers soon but will let you know if he does