fuel injectors advice

[dieselink]

on my 2l hdi when i got car last april,one of my injectors was putting a bit,so i took it out and cleaned it all and put it back and all was fine,now its doing it again,is there an easy fix for this,there dose not appear to be any sort of seal on it,if i remember rightly ??? should there be ??.any advice will be greatfull of thanks.

[madmadmax]

there should be a copper washer on the bottom it may be gummed in with soot and stuff, it should have been replaced when you took it out last time as it has been leaking since then also the bolts are copper and need to be replaced each time too.