Thanks for your reply 👍yes I have checked that and they are clear of any debris. I think I have got to get underneath the car to locate the pipe to clear it . I have got a trolley jack so have got a friend who has got some axle stands so hopefully I can do it myself if not I will have to take it to a garage. If I sort it out I will update my post so hopefully other people with the same problem can fix it.
Thanks again for your advice