This may be an early indication of cylinder head gasket failure - its easy to check by a garage with the correct gear. Basically we 'sniff' the fumes inside the expansion bottle with a device that holds a blue fluid - if the fluid turns yellow then exhaust gases are present. Mind you you may only need a new bottle top but its best to make sure.
John
February 2008
I can answer this question...
How can I fix my peugeot 405 stdt estate car please?
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