ok ive just done this..
pump sprayer wasn't great as I messed the end up trying too get a better fit..
none the less it worked.
was hard work trying too keep it at idle but once done we were away.
car runs a lot better, its on 70k now and this is the first time its been done.
biggest improvement is start up..starts much faster now each time.
mpg is better and general sounds os cleaner.
well worth a go for half hours work