Hi there welcome and thank you for the question hope i can be of some assistance to your problem
Is your oil leak coming from the area indicated in the picture by the arror below and is it stilll leaking since you have cleaned and refit it?
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Could not open your picture (red cross in box)
Will ask my son when comes home if he knows why?
Yes still leak, where turbo inlet transition plastic piece that connects to air rubber pipe. 2 jubilee clips join.
Have also yesterday taken air filter box off and removed
breather plastic box to inspect diapragm and spring and make sure no blockages, all ok.
Ok then these are common for leaking sometimes you just get a misting or sometimes it can cause more of a leak, now normally to start with we remove the pipes and clean off all the pipes and then refit the pipes as it is normally down to the clips not been tight enough that causes the leak if it still leaks after this then the pipes need to be changed but just make sure that your oil leak is not coming from the oil return pipe gasket as this sits below the pipe.
If you could post a picture of the leak area then that would be helpful.