I have had my car for a few months now, a while ago i was washing it and thought I would do the engine bay. I took the cover off and noticed one of the injectors had been leaking so I took it to my local garage / person I had known for years to fix. No problem, injector taken out out and re seated. Ok I thought, but notice a few days later that it is leaking again . Anyway I take it back and to cut a long story short after the 3rd time of re seating, this morning I checked it when I got to work, and again it was still leaking. I ring them up and they say ok, we can fit it in next tuesday. I made it clear that it was getting annoying now and it should be fixed for good this time. ( I do understand that not everything is an easy fix and things do not always work first time) So after finishing work today I was driving home (luckily!) about 100 yards from home there was a bang and a loud pumping noise, WHAT WAS THAT? I thought, then smoke was coming from the bonnet, I pulled onto my drive turned it off and opened the bonnet, the injector has blown itself out of the head, and stripped the threads from the clamp ( because I took the cover off to check this morning, then put in the boot as it was going in on Tuesday!) it has hit the inside of the bonnet and dented it!!!!!. Why would it take this many times to re seat an injector properly? is there any other issues which may cause an injector to leak ? the other 3 are fine!