Hdi injector refurb

[Dan!]

The tips on these are really sensitive so it's not a good idea to be even rubbing the dirt off them with a cloth, as you risk clogging up the holes in the nozzle and ruining the spray pattern/blockimg them completely. If they have been subject to any condensation or water then they may be useless anyway as the rust/corrosion will do a pretty good job of totally blocking the nozzle holes aswel.