Hi there Liam... With what you describe is happening to your bus, it sounds to me like your injectors need cleaning. There are diesel specialists around who can refurbish your existing injectors, which is very much cheaper than getting replacements. I think there is an outfit in Botley, which is not too far from you, that can do them. At 125k, I would really only expect this sort of thing to happen if the engine has spent its life being filled up with cheap 'supermarket' fuel. There's nothing wrong in using the supermarket type cheap fuel as long as you put a tankful of expensive stuff in once a month or so, because it is only the top brands like BP ultimate or Shell V-Power or the Texaco equivalent, that have the extra additives in it that keep the engine and injectors clean. For a quick fix, it's just possible that you could try putting one of the bottles of fuel additive you get from Halfords or any good Motor Factors, that are supposed to clean your injectors as you drive, into your fuel tank, but it does sound as though yours are pretty sooted up to produce the kind of smoke etc. that you are doing...! Good luck... Cheers.. Robin
Edited by robin100145 - 9 hours 40 minutes ago at 11:37pm
Edited by robin100145 - 9 hours 40 minutes ago at 11:37pm