new to forum and new to my Focus so bear with me if I post in the wrong place or act dumb.
I have a 2009 1.6 TDCI Econetic. Only had it five days. First day I took it for a test and did 69 miles on motorway, fast A roads and winding B roads. absolutely no issues.
However, two days ago whilst thirty miles into a long journey and driving on the motorway I had a misfire or hesitation where vehicle lost power, it then corrected and repeated this every second or two. Just like "kangaroo petrol". Problem lasted five or six miles on motorway and apart from me pulling cautiously into the inside lane in case engine died totally there was great issue and no loss of speed overall. I just kept my foot down and it eventually corrected itself. This happened three times in a 240 mile round trip. At one point it failed on an A road as I approached and island. As I rounded the island I found that I had no turbo "kick" (usually comes in around 2000 rpm) when pulling away. Next island, ten miles up the road and the car had corrected itself and performed great again with bags of pull at 2k revs.
I am fairly certain that the problem is the turbo cutting out and back in and I could also hear a faint "chirrup" (sounding very much like a bird or an insect) every time the misfire/hesitation occurred. This leads me to think some valve or other control is operating sporadically, causing the issue.
However, this is my first diesel, my first modern Ford and the first time I have had any issues of this nature.
Please can someone give me some advice that is based solidly in experience. It seems that there are many similar issues with this 110 ps 1.6 engine but not many out there have a definite knowledge of how to solve it. As the car is going back to the garage I want to make sure that they don't keep it for weeks without getting to the bottom of it.