Answer

Hello & Welcome to ja.com...

These models with the Zetec engine did have its fair share of troubles and in these areas too..

You dont mention of there is ever an engine managaement light on so I'll assume not.

The first thing to check is the PCV valve at the front of the engine and its associated piping.

From your description of the faults , I feel this is the most likley issue here... You need to purchase a new valve - and ideally the pipe that comes from it from Fords... they are cheap enough and once fitted I think you will find it will make the world of difference.

Worth just checking too - can you hear any air leaks ? Check underneath the coil pack, here is a rubber "T" piece that often splits and causes problems... a bit if a side issue on this one but worth a look.

Get the valve done as a first...

I Sincerely hope I have helped you -- Please ask if you need further help -

Kind Rgds, MIKE

 

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