Three years ago I bought a Mondeo 2.0TDCI, good condition, full service history, 39,000 miles (now 48,000) to tow my caravan, which it has done very well. Three weeks ago while driving solo the turbo cut out and went into limp home mode, I took it to my garage and was told it needed a new turbo. This was fitted, but when I started to drive it again it had flat spots and low power and lots of black smoke until the turbo kicked in. I took it back and was told there were no faults showing and it needed a good run, I did this solo and with caravan hitched, but no improvement.

I also noticed reduced fuel economy so I took it to another garage for a second opinion, they said no faults were showing, but they cleaned the EGR and still no improvement. With further checks they found engine rattles and something to do with oil levels. I can't remember exactly what they meant, but they think all this could lead to injector problems and advised injector testing, then filters and mass airflow sensor. I am unsure which direction to take, and hope you can give me some advice please.