Oil leaks and Injector problems. Hi new to this forum but would welcome some help. My car is a 04 plate 1.6 tdi Ghia. Had problem with 'chuffing' sound coming from injector - sounded like a tank! Repaired in Feb - broke down 5 days later - due to 1 injector not being reconnected properly sprayed 3/4 tank diesel down the M3! Repaired again and engine steam cleaned but now less than 3 months later same problem with same injector - back in the garage. Now told there is oil leak around seal between two plates at head of engine -not the head gasket but above that (used to be called the rockafella?) does that make sense? Garage says no parts required but want to charge me a further £92 for the labour. They also say that in order to do the injectors they have strip down the engine anyway so not much more work to do to fix oil leak, best to do it now or it would all have to come off again at later date. Fact no parts required indicates to me leak is minor problem - new seal/sealant required, which I believe is merely pennies? Question is would they have had to mess with this in the first place to make 1st repair to injectors in Feb? if so could they have caused it getting to the injectors? I think it reasonable for them to fix free as gesture of goodwill given all the hassle I've had with them. They think otherwise. Grateful for any advice please....... thanks and happy to provide more info.