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HI all
Peugeot 207 1.4s 8 valve 53k miles

How much pressure should there be in the expansion bottle? when the engine is up to temp, and when I start to un screw the cap off. It pops then he coolant rises and will over flow the bottle. Then if I start the engine and un screw that cap, the coolant level goes down. Is this normal? I do loose a little coolant.

Also 10 weeks ago I had the head gasket changed/water pump/timing belt. There was oil in the coolant. Now the water and oil is clean. As the head gasket gone again? I paid £550 including having the head skimmed. The warranty was a 1000 mile or 3 months what ever comes first. I have done 2000 and the garage say the warranty es expired.

Any help would be great thanks
 

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off hand I think there is 4 t 5lb pressure in the system when up to normal temp ,you should not take the cap off the expansion bottle until it has cooled down as you risk scalding yourself ,under pressure water will escape if you take the cap off whilst hot ,that's why its called an expansion bottle ,:thumb:
 
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