A simple tool to remove the hdi injectors can be made by unscrewing the top of one of the injectors and welding the top to a slide hammer. Screw the top attached to the slide hammer back on to the injectors for removal and give them a thump. If they are very well stuck soak them overnight or longer with duck oil and give them a good whack on the sides with a hammer and bar to loosen the carbon build up - be careful not to hit the threads as you will have to screw the cap on to the top of the injector. (Sealey make a tool which is basically the same) - this will save you potentially hundreds of pounds. You may have to get some-one to hit the side of the injector as you pull on the slide hammer.

This tool will only work if your injectors are loose which most are not. i regularly apply a force of upto 20 tonnes to remove these injectors and have a 99% success rate. my company A P Autodiagnostics travells the whole of the uk removeing seized injectors for unsuspecting car owners day in day out. we work for garages rangeing from little back street to major dealers and also do jobs on peoples drives when nessesary.we cover most if not all common rail diesel engines and can also remove damaged injectors where threads have been tor off by previous attempts.hth Tony