ok guys sorry to bump this up again but i have only just managed to have another look at my car.
checked all my breather pipes they are all ok with no splits - (i assumed this would be the case as i have replaced them all recently)
As i can smell oil - i thought i'd check the level and to my shock and horror

i found the the yellow plastic bit my dipstick sits in has snapped clean in half at the point it joins on the the metal tube!!!!!!!
Now this will need sorting anyway - and i am sure this is why i can smell oil - but would this cause the bad idle on my car?


Has anybody had anything similar before??