Tightened an injector and replaced a cracked hose. The vehicle had a full service when the loose injector was discovered. I got a friend to look it over and he has said the vehicle hadn't been serviced as the oil was old and when he opened the valve that leads to the injectors, it was clogged...

Did this issue ever get resolved? Our freelander is doing exactly the same thing. It's been to 2 mechanics and each time it comes back it's fine for a couple weeks but then the problem comes back worse than ever.