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1

Omega General Help / Re: Mystery Coolant Loss

« on: 18 May 2010, 21:24:38 »

Thanks guys once again for your suggestions! 

One thing I forgot to mention was on occasions there has been a bit of steam coming from under the bonnet on the drivers side when I have pulled up at traffic lights etc?  :-/

Suggestion made by markspark has made me wonder if the Coolant tank cap is faulty and when the system is under pressure it is losing the water there?

Have many of you ever experienced this fault with the coolant tank cap?

2

Omega General Help / Re: Mystery Coolant Loss

« on: 18 May 2010, 19:12:36 »

Hi Guys thanks for all the advice today 

It is a 1999 on a T plate model (old shape). Car has done only 68000 miles so cant see it been a Head Gasket?

I have checked the car when running at operating temperature and cannot see any leaks. If there is a blockage in one of the pipes is there anything I can use to clean it out?

Also there is no damp patches in the car or beneath the car. I left a sheet under the car last night without so much as a drop of water on it this morning

Be interesting to see if it loses any more coolant over the weekend when I use the car next.  :-?

3

Omega General Help / Mystery Coolant Loss

« on: 18 May 2010, 14:56:14 »

Wonders if anyone could help with follow issue??

Been suffering coolant loss on my Omega 3.0 MV6 and have checked the following for faults with no success of finding the culprit 

Radiator no leaks
Pipe work no leaks
Heater Bypass Valve no leaks
Coolant tank no leaks
No white sludge on oil filler cap or dipstick
No contamination in coolant
No white smoke from exhaust once engine up to temperature.
No over Heating
Heating and Air con work fine.

Travelled into town yesterday (12 miles) and coolant dropped 2/3 of way down but engine never over heated?

Topped the level back up when engine had cooled and travelled another 8 miles this time no coolant loss?

Garage changed water pump last week, which I thought was the cause of the coolant loss but still the problem persists. I have noticed below where the water pump is situated that there is a slight leak which looks to be oil not water does this have any bearing on my problems?

Any suggestions would be much appreciated