K jet was involved, i feel sorry for the garage.
£30 for a pipe that it may have needed isn''t that unreasonable with it been mecanical the only way to diagnose it half the time is to piss around with it ,measure pressures and change the bits that logic says chould be f**ked.
by all means you can ask them to clean it the reply wont be to your likeing. a sharp knock is enough to upset a metering head if your unlucky let allone takeing the bugger apart if they do it it'll do one of 2 things. not run at all or run perfectly but leack round the join between castings
